The catalog page is from the Holubar 1954-1955 catalog and shows a few Simond pitons. #12 is a Simond U -shape ice piton, #13 is a Simond U shape (channel) piton, #14 and #15 are Simond Rock pitons. These style pitons were made from the mid 1950s through the 1970s so it is difficult to determine the older from the newer batches. I am guessing on the date but sometime in the late 1940's or very early 1950's the manufacturers stamp changed from F. Simond (Francois) to Claudius.
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