DirtyDozen12
··Thanks, mystery donor!About the movement, thanks to @dodo44 and @DirtyDozen12 for you informations, finally it seems to be a 27MS rather than a 10.68N or 23M (see pictures below)
27MS
10.68N
23M
About the movement, thanks to @dodo44 and @DirtyDozen12 for you informations, finally it seems to be a 27MS rather than a 10.68N or 23M (see pictures below)
27MS
10.68N
23M
PGF indeed made gold cases for the french market
PGF, the biggest French case maker of that time.
Have you contacted Longines to ask for more information?
Update after receiving an email from Longines this morning :
"Originally, the serial number 7'467'151 identifies a mechanical Longines movement with manual winding, caliber 23M. It was invoiced on May 18, 1948 to our Longines subsidiary in France.
The other parts of the watch were manufactured locally under Longines license. Unfortunately, since we do not have the records in our possession, we are not able to give you more information about your model."
So it's a caliber 23M (congrats @DirtyDozen12 😀 )
According to the email of Longines I conclude the watch is all original : all is well that ends well !! 😀 😀
Again, thanks a lot for your help !
As for the “PGF” mark, the author of “Vintage watch ressources” website heard from a jeweler that it could refer to a case maker named “Paul Frank”.