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.
Funny, I just posted a question on 6 forks I have with the same marks. I can tell you that it is EPNS, not sterling (as far as I know) - that is unless the SS is Sterling Silver and not the makers name.
If you find anything else, please let me know too.
I have a set of forks that I don't know anything about, I cannot find the hallmark anywhere... http://m1.freeshare.us/view/?150fs827119.jpg" onclick="window.open(this.href);return false; http://m1.freeshare.us/view/?150fs826892.jpg" onclick="window.open(this.href);return false; Can anyone help?? Tha...