In the 50s and 60s

If you look today at some 1950s GPs on the US version of the major online auction site, you will see genuine GP's with cases marked Wadsworth. That is a US case maker - the movements were imported and cased in the US. Both in the USA and Latin America there were authorized case makers - the reason had to do with import duties. I have personally only seen the dress 1960s model 36000 bph Chronometers with screw back cases, but that does not mean that other case styles did not exist. I have seen earlier non chronometer GP gyromatics with cases similar to yours, and the case would likely fit a chronometer movement. The fitting of movement to case could certainly have been original. All will be clear when the watch is opened and examined.

If you are seeking specifically an early 32A model in a round dress case, you may have to spend more time hunting. However, GP Chronometer HF automatics are not all that rare, and it should not be hard to find one in a variety of case styles about which there would be no doubts.

Ginger

💰186 Marketplace Listings for Girard Perregaux›

Gyromatic Chronometer HF - info?

By: Fyrsten : August 30th, 2011-04:26

Hi, I have been searching the forum for info about the Gyromatic Chronometer HF, but can't seem to find any info about this particular model (pictures at the end of the post). The watch is supposed to be from the late 60's, and as far as I have understood...

Similar GP's have been seen on the forum.

By: dxboon : August 30th, 2011-07:12

Here's an earlier post: click here . The only way to know for sure what's inside is to open it up. Some late 60s GP HF chronometers contained caliber 42, for example. Cheers, Daos

Thank you

By: Fyrsten : August 31st, 2011-02:01

Thank you for the link! It provided me with much appreciated insight.

Looks like a normal variant

By: Ginger : August 30th, 2011-17:15

The crown appears to be a replacement. There are various case styles, especially if it was cased outside of Switzerland (many vintage GPs originate in South America). I would assume it is what it claims to be, but only a look inside can provide proof. The...

Cased outside Switzerland?

By: Fyrsten : August 31st, 2011-02:03

I was not aware of vintage GPs being cased outside of Switzerland. What is the history behind this, and is a vintage GP cased in Switzerland be considered to be more desireable?

In the 50s and 60s

By: Ginger : August 31st, 2011-17:09