Instagram story viewer> @t_solo_t> Posts

T Solo T

@t_solo_t

4.4K

followers

4159

following

POSTS STORIES REELS TAGGED

This is the original first retail configuration using the steel red lock nut… not the cleanest rehaut ring but everything else inverted case wide lume hour hand ,large chamfers,serif round 3 bezel is as it should be . 1971 movement number ..all correct
Interesting note…. Some of this model are using the narrow crown opening original Comex cases, often with the very rare split rehaut ring .

These are from the leftover batch cases, exclusively for Comex repurposed for the first retail

I have shown the difference on a previous blog…. there are a few serious rarities in the PP Family and the narrow opening is certainly one of them by @t_solo_t

101

2

5 days ago

Omega - Seamaster 600 « Ploprof - Blue Print - Inverted case stamping » - Mark 1 (B1 Bezel - D1 Dial) - ST 166.077 - Omega 1002

Similar but different…

Maybe one of the first retail Seamaster 600, in one of its most intriguing configurations.

What it shares with a « regular » Mark 1 (B1 bezel / D2 dial):

- B1 bezel: serif « 1 », round-top « 3 », thicker print, triangular 10-minute markers
- Mark 1 case with the U-shaped crown cut-out and steel lock nut
- Cal. 1002: high-beat 28,800 vph, instant date change at midnight
- Plongeur-style hands

What sets it apart:

- D1 dial: not a single print like the D2, but a pre-production « Dial Zero » overprinted to meet the 1971 retail launch. Tell-tale signs: « Professional » and « 600 » sandwiching « Seamaster », squashed lettering, sharp « A » and a dumpy « 600 ». The D2 has a spaced-out « Professional » and a flat-top « A ».
- Blue print: blue lettering, where the D2 shows white text
- Inverted case stamping: the in-pressed inverted marking, a feature associated with the very first cases

A reminder of why originality matters: more than 60% of Seamaster 600s that have gone through Bienne show a movement swap. Every detail counts.

Reference: omegaploprof.com by Stuart Solomons (@t_solo_t). Highly recommended reading for any Ploprof collector.

#OmegaPloprof
#Ploprof
#Seamaster600
#VintageOmega
#DiveWatch by @t_solo_t

194

22

5 days ago

MOD and NATO code numbers engravings on the back of watches was for many years subcontracted to and carried out by Goldsmiths in Piccadilly London .. this is a very early example on the back of a Weems aviator Watch by @t_solo_t

33

5

7 days ago

Collectors often ask why I talk about the importance of the stud pusher . Indeed what is the stud pusher…this was the precursor of the under bezel click bearing which after 1969 was a ball bearing but before was this spring loaded stud by @t_solo_t

84

4

7 days ago

Old school watch makers called them pink movements ..in fact the Omega watch company delineated their products with a beryllium copper coating ..more expensive but superb protection from corrosion …however in the course of creating prototypes not all parts were treated as such so modifications to the barrel bridge for example would use lemania stocked, none coated parts .

If your movement has something like this its most definitely prototype and comes directly from the prototype and testing department of Omega ,the biggest unit of its kind in Switzerland by @t_solo_t

40

0

7 days ago

Watches exported to the United States of America became subject to various taxations the most common one , even for steel Watches was related to the number of jewels in the movement I have reproduced a precis as follows…
The legislation was the Smoot–Hawley Tariff Act of 1930, officially the Tariff Act of 1930.
The relevant provision was Paragraph 367(a)(6), which levied a special import duty on watch movements containing more than 17 jewels.
This imposed a flat duty of $10.75 per movement !
Effective date: 18 June 1930.
This was a substantial sum of money and so Omega set about creating degraded movements for export. This photo is an excellent example of an American Ploprof with its correct original rotor and it’s hacking facility and quick date set on a 1000 calibre with 17 jewels by @t_solo_t

90

4

8 days ago

35

2

12 days ago

Watch-case with a watertight winding crown the original patent for the PLOPROF 600

Inventor, Hans Wider, Peter Aebi ,Current Assignee Omega Louis Brandt and Frere SA
Worldwide applications
1968 CH CH 1969 GB US DE FR
Application US860690A events
1969-09-24
Application filed by Omega Louis Brandt and Frere SA

Abstract

A WATCH-CASE WITH A WATERTIGHT WINDING CROWN, IN WHICH THE CROWN HAS A THREADED PORTION CAPABLE OF ENGAGING, AS IT IS MOVED AXIALLY, THE TAPPING OF A NUT GUIDED IN AN OPENING OF THE WATCH-CASE AND HAVING A FIXED AXIAL POSITION, ROTATION OF SAID NUT RESULTING, ON THE ONE HAND, IN DISPLACING THE CROWN INWARDLY WITHOUT CAUSING IT TO ROTATE ABOUT ITS OWN AXIS, WHILE COMPRESSING AT LEAST ONE GASKET AGAINST A SHOULDER OF THE WATCH-CASE, AND, ON THE OTHER HAND, IN LOCKING THE CROWN IN ITS INNER POSITION, THE CROWN HEAD, HAVING A NONCIRCULAR PERIPHERY, BEING ENGAGED AT LEAST PARTIALLY IN A NONCIRCULAR CUT-OUT PART OF THE WATCHCASE.
Images (2) by @t_solo_t

152

7

21 days ago

In tribute to my good friend Enversteel and his comment about BESANCON I am posting a copy of the accuracy certification presented with all marine chronometers …essentially the same accuracy as any 2.4 MHz mega quartz by @t_solo_t

140

1

22 days ago

When finally issued retail, the solid gold mega quartz had a gold seconds hand, however for the adverts and for a very few early samples there was a red seconds hand … by @t_solo_t

62

1

22 days ago

Still the most accurate none thermo compensated watch in the world +/- 9 secs a year !! was the quoted rate but +/- 4 secs a year was achieved if tuned !
Hand made Aventurine dial each one different.
Brown or black ,leather or shark skin or crocodile strap ,or gold bracelet by @t_solo_t

40

1

22 days ago

It’s worth looking closely when viewing a watch because the small details reveal large clues…..look at the touching no gap ‘lume to date window’ on the left compared with the gap ‘lume to date window’ on the right ….left is service dial …right is original…. Also the rectilinear zeroes on the right display the font difference .

For the record these are in the 33 million movement range [feet and metres ] which starts in mid 1974 and runs to 1982 …the biggest cohort by far by @t_solo_t

168

8

a month ago