Hi guys
I bought this on a whim the other day, then got it serviced and cleaned up...all in about £600. I normally spend a loooong time researching watches before I buy anything but this one popped up and only had 5 mins auction time remaining so I pulled the trigger, even though it was listed as not working.

I’ve since tried to find another similar online and just can’t...I love it and not looking to sell or anything but if anyone could point me to a good source of info that would be much appreciated. It’s go the observatory logo but then no reference to being an observatory chronometer so might just be a ruse! It says 9377GA on the case but that doesn’t seem to give many search results either! The movement says 440-000. It’s got a beautifully smooth second hand sweep and keeps very good time.

Thanks,

George

 

The best reason to buy any watch. Enjoy!

 

Here's a couple I found. Similar case, day/date, observatory logo etc but dials are different variants. Not a whole lot of info on these ones as well

 

What a nice dial! To echo a post above what a great reason to buy a watch. Wear in good health.

 

Good to see someone else inquiring about this watch, as there is little out there on it. I also recently acquired a 9377GA on a whim without any clue what I was buying. Mine's a little different with blue dial and Italian day marker. I just had mine serviced and it runs great. I found the email address of the GP museum curator on another site and emailed him (Wally....good dude). Here is what he replied about the watch, first before I knew the reference number but had a picture of the 440 movement (mine is 440-203):

"....the caliber GP 440 was in use in 1970. It is a 12 ½ ‘’’, 17 jewels, 36.000 vibrations/hour, based on a AS 1923 ebauche."

Then, when he told me how to find the reference number between the lugs, he replied again:

"The ref. 9377GA has been produced from 1971 to 1976. There were 2 versions: stainless steel like yours, 2000 pieces made and gold plated, 1000 pieces. The prices were CHF 390.—for steel and 435.—for plated. The gold coloured cover is an extra protection against magnetism, hence the name «super antimagnetic »."

I think the 2-71 inside the back of the case (same as mine) suggests a Feb 1971 production date, so we have an early version. You didn't have to worry about the strap as yours is clearly an original steel GP bracelet, but I ended up sourcing a period appropriate tang buckle and new strap for mine to round it out.

I think we did well. Just got another compliment on it today!!

Cheers!!!

 

So... I just bought another one, just waiting for the seller to send it to me to check it out properly. The crystal is in a terrible state though and I’m hoping the dial is ok underneath. Does anyone know how to find the part number or how to go about this??
Thanks in advance

George

 

Hi, I have similar watch in Blue faces and Gold, I purchased it years ago, needs CLA. Just got quoted 625.00. Photos attached!

 

Hey!
SO I bought another one, but it's missing the gold coloured cover you mentioned. Any idea how to source one??? I literally have no idea what to search for.
Thanks