The War of Independence by Carlos Perez September 27, 2001 Beneath the cheerful reports of growth and prosperity, expansion and acquisition, there is a cold civil war silently being fought within the watch industry of Switzerland. It is not something which registers upon the consciousness of the average watch... Read more
In Memory of David M. Graifman The Myriad Dialects of Time by Carlos Perez October 8, 2001 If anything could be called the universal language of horology, it must the round dial with concentric hour and minute hands pointing to a chapter ring demarked for twelve hours. It is... Read more
Prometheus Bound The Final Paradigm of Horological Evolution by Carlos Perez November 23, 2001 I suppose that most of us when describing our little hobby, break out that $20 word horology. There is probably a perverse pleasure in watching a listener’s face go blank as they mentally grasp for... Read more
83 Jewels Too Many?…Continued A watch that many will be familiar with is the Hamilton Grade 992 Railroad pocket watch. It serves as an example of the technically best way to functionally-jewel a manual wind time-only watch to the optimum level. All jewels serve a useful function, all wearing... Read more
Text by Rob Berkavicius (Rob B) Photographs by Paul Delury For decades, watches of less than 15 jewels have been considered by many to be “low end” and only suitable for those poor souls who could not afford anything better. This belief continues today, even among collectors of mechanical... Read more
Quiz 1 Below you will see pictures of watches on the left, and close-up sections of watch movements on the right. They have been jumbled up – none of the watches are next to their correct movements. Your task is to match the movements to the correct watches. There... Read more
Quiz 2 Here are ten watches and movements jumbled up. No watch is opposite its correct movement. Match each watch to the correct movement. Watch #1 …………………………………………………………. Movement #1 Watch #2 …………………………………………………………. Movement #2 Watch #3 …………………………………………………………. Movement #3 Watch #4 …………………………………………………………. Movement #4 Watch #5 …………………………………………………………. Movement #5... Read more
Quiz 3 – Pocket Watches Here are ten pocket watches and movements jumbled up. No watch is opposite its correct movement. Match each watch to the correct movement. Watch #1 ………………………………………………………. Movement #1 Watch #2 ………………………………………………………. Movement #2 Watch #3 ………………………………………………………. Movement #3 Watch #4 ………………………………………………………. Movement #4 Watch... Read more
Match the Lugs Below are close-up pics of various watch lugs. See if you can match them to the watches listed. 1950’s Omega Seamaster 1930’s Waltham 1960’s Tudor Prince Oysterdate 1920’s Bulova 1967 Accutron 218 1960’s Hamilton Thin-o-matic 1960’s Hamilton Sea-lectric II Lug 1 Lug 2 Lug 3 Lug... Read more
Identify the Logos Below is a selection of movement manufacturer’s logos. Can you identify the manufacturers?   Logo 1 Logo 2 Logo 3 Logo 4 Logo 5 Logo 6 Logo 7 Logo 8 Logo 9 Logo 10 Logo 11 Logo 12 Click here to see the answers. Read more
D.I.Y. Watch Dials by Rob Berkavicius (Rob B) Before you fall out of your chair in horror at the thought of home-made dials, let me explain why I make my own dials. Although I collect watches, my main interest is in collecting and restoring old watch movements. This is... Read more
Russian Mechanical Alarm & Perpetual Calendar Watches By Paul Delury History The Sekonda Mechanical Alarm is produced by the Poljot (“Flight”), First Moscow Watch Factory. “Sekonda” is the name used on Poljot’s export watches, and thus the words “Made In Russia” do not adorn the dial on these timepieces.... Read more
12 size Grade 912 Hamilton Pocket Watch The animation may take a little time to fully load (file size 421K) Read more
12 size Waltham Colonial A movement The animation may take a little time to fully load (file size 1.56Mb) Read more
G’day TZners, Having been intrigued by the wooden dials used in some Hamilton watches, I have had a hankering to attempt to make one myself. I decided to use a 12 size Elgin pocket watch as my guinea pig, both as it would probably be easier to work on... Read more
G’day TZners, Having read a lot of good reports about the crystal polishing product Polywatch of late, I obtained a tube to see just how good it was. For the past couple of years I have been polishing the acrylic crystals on my vintage watches with an automotive metal... Read more
byRob Berkavicius (Rob B)   Of all the Watch Repairer’s tools, screwdrivers are by far the most extensively used, and the simplest to maintain. Yet, their apparent simplicity leads them to be much neglected in the area of tool maintenance.Little detracts from the look of a watch movement more... Read more
A short while ago I acquired this circa 1964 Hamilton Dateline T-477 Thin-o-matic, and was wondering what movement it housed in the one-piece case. Well, the day has arrived for the me to delve into the inner sanctum of this mystery. My crystal lift tool finally arrived, and I... Read more
G’day TZners,I obtained this 1920’s Bulova watch in a hinge-back case about half a year ago. It was running about 6 minutes fast per day, making it a good candidate for a servicing. This is a small watch, but is not out of the ordinary for a man’s timepiece... Read more
G’day TZners, There has been a fair amount of discussion on the TZ Vintage Forum regarding the replacement of old luminous material in watch hands, and I was interested in having a go at doing it myself. I have owned this 1920’s Bulovahingeback watch for some time now, and... Read more
Restoring and Replating a Watch Caseby Rob Berkavicius (Rob B) How many of us collectors of vintage watches own pieces that don’t get worn, or never go in our display cases because they look beaten up? Well believe it or not, it isn’t very hard to restore a watch... Read more
  by Rob Berkavicius (Rob B)Pics by Paul Delury When someone mentions the name “Omega Speedmaster”, the first thing that springs to mind for many of us is “moonwatch”, and the associated image of a large stainless steel chronograph with its distinctive white hands and lettering on a black... Read more
By Paul Delury The Hamilton line of chronographs are considered to be “entry-level” Swiss chronographs. They are some of the least expensive watches employing the ubiquitous Valjoux 7750 auto chronograph movement. In fact, as both Hamilton and Valjoux/ETA are owned by the Swiss SMH conglomerate, you could say that... Read more
By Paul Delury   Presented for your viewing pleasure, or otherwise as the case may be, are six watches, each with something just that bit different about them. You won’t find these on too many people’s wrists, some with good reason. I have had an interest in the more... Read more
Cyma Clocks  Many of the Swiss watch companies had a clock or two in their product line, and some of them are now thought of as collector’s items, particularly those made by Omega, the Atmos clocks by Jaeger le Coultre, and Accutron tuning fork clocks made byBulova.Here are a... Read more
by Rob Berkavicius (Rob B) and Paul Delury (Gumby) Here in Australia, it is relatively unusual to see American vintage watches come in for repair or service. Most vintage wristwatches we see here are Swiss, andpocket watches Swiss or English.In my 25 or so years of collecting and repairing,... Read more
G’dayTZners,I have been taking some close-up pictures once again. This time I concentrated on the different styles of regulators found on an assortment of watch movements. It’s quite incredible to see the diversity of methods and devices employed by the different manufacturers, both vintage and contemporary, to accomplish the... Read more
A Jewel Among Watch Levers by Rob Berkavicius (Rob B) If you ever opened up an old Bulova from the 1930’s or so, you may have been pleasantly surprised to find it contained a Cal. 10AN movement, which is really a FHF 3 in disguise (Fabrique d’Horologerie de Fontainemelon... Read more
The Tissot “Astrolon” Plastic Watch by Rob Berkavicius (Rob B) andPaul Delury (Gumby) While digging through the junk box at my local watch materials supply house, I found a plastic bag containing two “el-cheapo” looking watch movements. My first reaction was “quartz junk”, but as I flung them back... Read more
A Visit to Blancpain USA by Michael Sandler  Recently, I had the opportunity to pay a visit to the the offices of The Swatch Group (U.S.) Inc. in Weehawken, NJ, specifically to visit Blancpain. I needed to have a tiny screw replaced in the deployant clasp on my Aqualung.... Read more
Geneva Seal Criteria by Michael Sandler As you all probably know…Patek Philippe and a few other brands are very proud to state that their watches contain the Geneva Seal. In case you were wondering, the following 12 conditions must be met in order for a watch to contain the... Read more
Blancpain AquaLung: A Pictorial by Michael Sandler The Statistics Case Case Composition: Stainless steel, brushed, Blancpain name engraved on side Crystal: Domed sapphire, glareproofed Caseback: Screwed in, stainless steel with sapphire insert Crown: Screwed down Case Diameter: 37.8 millimeters Case Thickness (incl. crystal): 9.8 millimeters Case Length (lug-end to... Read more
The British Masters in Timekeeping: A Pictorial Part 2 of 4 – Arnold & Son Marine Timekeeper I by Michael Sandler Case / Dial Case Composition: 18K red gold, three parts Crystal/Bezel: Flat, sapphire, bezel secured by 6 screws Crown: Screw-down Caseback: Secured by 6 screws Water Resistance: 660... Read more
The British Masters in Timekeeping: A Pictorial Part 3 of 4 – Graham Foudroyante by Michael Sandler GRAHAM FOUDROYANTE Case / Dial Case Composition: 18K red gold, three parts Crystal/Bezel: Flat, sapphire Crown: Non-screwdown, with coaxial pusher (for rattrapante) Pushbuttons: Start/stop at 2:00, reset at 5:00 Caseback: Secured by... Read more
The British Masters in Timekeeping: A Pictorial Part 4 of 4 – Tompion Alarm GMT by Michael Sandler TOMPION ALARM GMT Case / Dial Case Composition: 18K red gold, three parts Crystal/Bezel: Domed, sapphire Crown: Dual crowns, first sets all functions except alarm, second sets alarm Caseback: Secured by... Read more

Crystal Hardness

It's About Time September 17, 2002

Crystal Hardness by Michael Sandler In general, strength and hardness are not synonymous terms. Material strength can be evaluated on a number of criteria…..tensile strength, hardness, brittleness, etc. Dependent on what your criteria are for defining “strength” in the case of a metal….your answers will be different. In terms... Read more
Review: The IWC Pellaton Automatic Winding System 5:1 Model by Michael Sandler Click image to enlarge OPENING COMMENTS I first learned of the existence of this little toy when I was browsing through the IWC website a couple of months ago. Then, about two weeks ago, I visited the... Read more
Review: Zenith Class 4 Chronograph by Michael Sandler This is a review of the Zenith Class 4 chronograph. I hope you find it useful. At the bottom of the page, there are links to MANY pictures I have taken of this watch. Please let me know what you think.... Read more
The Importance of Aperture Priority Mode For Macro Photos Posted by Reto Castellazzi on January 19, 2002 at 23:14:18: TZ Classics Forum Number: 1901 Posted from Host: (203.146.223.82) Dear all Yesterday I posted that Pierre Balmain Chrono with the dial only being partly in focus. Today I did not... Read more
I’ve been looking for way to extend the macro capability of my digital camera for a while. I had tried other methods, including shooting through photographic loupes, and magnifiers, but the quality I got wasn’t great, and it was difficult to control. Recently I remembered that photographic enlarging lenses... Read more