Gold & Platinum Ring Mark - Still looking for some help

[Jatmos]

Hi Everyone,

I have a very unique ring that I bought from a trusted antique jeweler. However, he was having a hard time placing the jeweler's mark and the rough date of creation on this ring.(He guessed the 1940's or 1950's, and that it's possibly European)

I'm hoping the maker may have also done other silver and gold work, so that ppl on this forum would recognize it. Worth a shot!

I presented it to my fiance, but I still don't have any history on it. If anyone recognizes the following mark (rough drawing, but I couldn't get an accurate picture), please let me know. Any help whatsoever would be greatly appreciated!!!



Details: Platinum PT900 w/ 18K gold accents , .86ct center diamond, G color, SI-1, .14ct in side mounted diamonds (.035ea, .07each side)
The engraving reads PT900 750 then the (S) mark

Some pretty pictures:





Thanks in advance!
Jason
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[silverthoughts]

Hi there

I couldn't find the S hallmark anywhere, but FYI PT900 means 90% platinum (purity of the platinum). The only mention of a S hallmark I could find is one with a winged S (no picture) hallmark - by George W. Shiebler in NY.

Bob
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[Jatmos]

Hi there

I couldn't find the S hallmark anywhere, but FYI PT900 means 90% platinum (purity of the platinum). The only mention of a S hallmark I could find is one with a winged S (no picture) hallmark - by George W. Shiebler in NY.

Bob

Thanks anyway, Bob. :-) It's been very tough to find out what this is! The 750 lends to the idea that this is European and not US. No one has been able to identify it so far!
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[Ohimesama]

Could it be that the "S" is the ring size? I just read the section about ring sizing in the top list on the home page - all the articles on silver, too- and I noticed that the English use letters to indicate sizes... don't know if that helps, but it can't hurt!
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[bubba]

PT 900 = platinum 90%
.750 = 18k gold, the yellow ring decoration shown in image is the 18k part
no information about the S trademark.
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