Anyone recognize this mark?

Kate N

Registered User
Jun 13, 2005
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I have 2 very old 0.935 silver watches which are stamped on the caseback with an inverted triangle, in which the letters GPG are stamped. (GP above a G)
The cases also are stamped DÉPOSÉ and have both 0,935 and the Swiss standing bear hallmark.
The pic isn't the best but the mark is on the lower right.
102.jpg

If anyone has any info on this mark, I'd love to know it.

Thanks, in advance.

Kate
 

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