The shorter piton is unmarked with no manufacturer stamp and shows up in the 1939 Italian Equipment Catalog as product # 2060. The larger ice piton is stamped "Accennofor" "Swiss Made."
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The 1939 Italian Equipment catalog page is from the Vertical Archaeology website and shows historic artifacts from the Ashby Robertson collection.
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Smaller size Attenhofer piton with ring. There are no manufacturer marks on the piton.
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