Nope, when I open the cylinder there is a "Y", "3", "3", and another character which looks like a "9" inside a circle stamped from top to bottom. They are definitely vertical, but they are not lined up. On the swing out arm itself is stamped what appears to be the number "53518" or "S3518" and the letters "DG". There is definitely not a Mod 17 or even a K-22 stamped there.
But, from reading some of the other threads, it appears this was not necessarily unusual during that time frame.
Thanks very much!
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