I have that key also on a pair of gold cufflinks sold by Cyrille Duquet around 1920, a gold diamond ring sold and hallmarked by Seifert (he was linked to Birks in some way). I am trying to nail that down...
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Key Hallmark by: wendy
this mark appears to be an antique Saunders Lorie & Co antique hallmark... Here is a link for you to see. https://www.langantiques.com/university/mark/saunders-lorie-co/
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Calgary Victorian Sapphire Necklace by: Antique Jewelry Investor Support Team
How interesting.
Would you happen to know the approximate year your Sapphire Necklace was purchased?
Kind Regards Antique Jewelry Investor Support Team
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Key mark on Calgary Victorian necklace by: Anonymous
I have a Victorian sapphire necklace with. Key mark handed down to me and it was from a jeweller in Calgary, called H.R. Chauncey, Limited Jewellers, Calgary, Alberta.
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Emerald Pin with Key Hallmark by: Anonymous
Hello. I have a 1 1/2 carat emerald pin that has same marks. Any ideas?
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Incredible Shoulders by: Anonymous
There can't be too many hallmarks like this key hallmark around. The work on the shoulders is quite incredible and befitting of a 2 carat diamond. Good luck. Vilma