crown comfort
12358
Sources
yes, you could find buckles etc on the usual sites, but you need to bring patience with you. It's not Omega or Rolex where you have more supply than demand 
Watch out for some fake buckles on the web, but like in the picture it should look like. For a strap, I would not look for a GP strap, that's even harder to find, any vintage strap in the right size will do or even a modern strap but better choose a flat design for the smaller vintage watches.
Cheers. CC
thanks
By: Danny V : December 9th, 2015-07:07
I tried searching ebay for vintage GP straps or buckles but can't find much. any other places you would suggest to look? is the one in the picture yours? really nice find if it is!
Sources
By: crown comfort : December 9th, 2015-07:51
yes, you could find buckles etc on the usual sites, but you need to bring patience with you. It's not Omega or Rolex where you have more supply than demand Watch out for some fake buckles on the web, but like in the picture it should look like. For a stra...
GP Gyromatic caliber 32A
By: Jack : December 12th, 2015-16:47
Very nice watch. Also looking for a nice 32A. Would be interested in any info, e.g., total production of Chronometer HF's, and Observatory Chronometers; the starting & stopping chronometer numbers (assume these are serially numbered) assigned to these wat...
These watches
By: TS1987 : December 13th, 2015-02:12
were not serially numbered. No Girard Perregaux watches from the period were. You will no doubt find these pages of interest: www.network54.com www.watchprosite.com www.watchprosite.com " target="_blank">www.network54.com i...
Argh
By: TS1987 : December 13th, 2015-03:51
Many of the urls I added have disappeared while I was away. But Dan, if you search for posts relating to Observatory Chronometers, going back to about 2003, you will find posts like this: www.watchprosite.com
That batch code
By: TS1987 : December 17th, 2015-07:43
is the lowest I can remember seeing for a Gyromatic Chronometer. I had two from batch 762, one from 760, one from 758 and one from batch 574. And batch numbers don't indicate year of production as the lowest number I listed, received chronometer certifica...
very interesting.
By: Danny V : December 17th, 2015-11:50
do you know if these batch numbers mean anything? if they are not chronological how did they assign these numbers, just randomly? some specific movement modifications? as far as I understand you said before that serially numbered. did you mean that serial...
I said
By: TS1987 : December 17th, 2015-22:25
That the chronometer certificate numbers are unique and would be assigned consecutively by the Bureau, but I don't know about batch numbers being consecutive as stamped by Girard Perregaux on the rotor bridge of each watch.