I collect pewter flasks, and in amassing quite the collection, I end up with more than I need or sometimes even duplicates.This particular flask happens to be one of my all time favorites, and I have been lucky enough to find a couple of these brand new in the box, never even used! I love the one I have and take it camping all the time. It holds a hefty 6 oz and the "lens cap" acts as a little cup.
I have no idea what decade this dates back to, but they are discontinued and not available anywhere.
