Rolex “Twinlock” and “Triplock” crowns
One of the most important and unique features of the Oyster case is its famous crown. The “Twinlock” crown is used on all regular models… Read More »Rolex “Twinlock” and “Triplock” crowns
vintage
Venus 175 movement – specifications and photo
Venus 175 is Swiss movement from 1960’s. There are two options with 30 and 45 minutes indication on the chronograph. 2 registers on the dial… Read More »Venus 175 movement – specifications and photo
Longines caliber 13.34 movement – specifications and photo
Longines 13.34 is Swiss manual-winding movement from 1910’s to 1930’s. Sub-dial for the seconds Ligne: 13 Manual-winding movement with 15 or 18 jewels f = 18000 A/h Diameter: 28.8 mm… Read More »Longines caliber 13.34 movement – specifications and photo
Short history of Seiko K. Hattori – Military watches
Short history of Seiko K. Hattori As with most present-day watch producers, watch manufacturer Seiko, did not see a decline after the end of WWII… Read More »Short history of Seiko K. Hattori – Military watches
The First Days and the Evolution of the Mid-500 Series Omega
The First Days and the Evolution of the Mid-500 Series In the 1950s and 1960s, Omega was a progressive and dynamic force in Swiss Watch… Read More »The First Days and the Evolution of the Mid-500 Series Omega
Omega 752 movement – specifications and photo
Omega 752 is Swiss automatic movement from 1960’s to 1970’s. Quickset date Automatic movement with 24 jewels f = 19800 A/h Power reserve: 50 hours Diameter: 27.9 mm… Read More »Omega 752 movement – specifications and photo
Omega 561 movement – specifications and photo
Omega 561 is Swiss automatic movement from 1950’s to 1960’s Automatic movement with 24 jewels f = 19800 A/h Power reserve: 50 hours Diameter: 27.9 mm More information… Read More »Omega 561 movement – specifications and photo
Rolex Numbers – Identification of the year of manufacture
Rolex Numbers – Identification of the year of manufacture from 1925 to 1987 In this article, We will introduce the serial numbers and approximate year… Read More »Rolex Numbers – Identification of the year of manufacture
The Practical Lubrication of Clocks and Watches
The Practical Lubrication of Clocks and Watches British Horological Institute READ IN .PDF FORMAT
Magnetism – what is it?
Magnetism – what is it? Magnetism is an ever-constant and insidious enemy to horologists. The means by which a watch may be magnetized are so… Read More »Magnetism – what is it?
Wheel Work – Terminology
Wheel Work – Terminology Wheel work is the basis for the construction of all instruments for the registering of time.Even the clepsydra, one of the… Read More »Wheel Work – Terminology
Junghans caliber J93/1 movement – specifications and photo
Junghans caliber 93/1 (693.82) is German movement from 1950’s to 1960’s. Manual-winding movement with 8 jewels. f = 18000 A/h Power reserve: 50 hours Diameter: 25.0 mm… Read More »Junghans caliber J93/1 movement – specifications and photo