Longines gold plated question

Posts
22
Likes
37
Good day OF, i recently acquired a gold Longines manual wind dress watch, and was unable to open the case to determine if it's a 14/18k gold or fully gold plated..

Longines has identified it to be a cal 280 plated gold watch made in 1966.

It would be greatly appreciated if I could get some confirmation on this as I have never come across a fully gold plated one with a gold caseback, most of them are on a stainless steel one. The only picture of the caseback is attached, rather blurry unfortunately. I don't see the 18k inscription on it.

Thank you and an advance Happy New Year to all ☺
 
Posts
13,310
Likes
18,424
In the case back is engraved, “Plaque Or 40 Microns”. This means, Gold Plated, 40 microns thick. I do not know the fineness of the gold used, but it is little consequence.

Hope this helps,
gatorcpa
 
Posts
22
Likes
37
In the case back is engraved, “Plaque Or 40 Microns”. This means, Gold Plated, 40 microns thick. I do not know the fineness of the gold used, but it is little consequence.

Hope this helps,
gatorcpa

That totally answers my question.
Thank you so much! 😀😀😀