Haven't bought any prop or prop parts for years; in fact I've been selling off stuff from my collection to thin it down. However, I simply couldn't resist when I saw this M38 scope being put up for sale by another collector.
This is my second M38 scope; I acquired my first many years ago. Here they are side by side.
And here's a pic of all my real scopes. The shorter one on an elevated base is an M19 scope.