There are a variety of different antique and vintage silver and pewter shot glasses and jiggers out there bearing the phrase "Just a Thimble Full," but I've not found an exact match for this very large one, so am not sure the maker and can't find a mark. This one would hold a very healthy pour--though happily one can claim it's just a thimble full! I believe it is silver plate and is in very good condition, with just a tiny bit of chipping to the plate in one spot on the rim, as documented.  A fun one for the bar--or the bedside! 

3 1/2" t x 2 3/8" in diameter at lip. Overall great condition, with tiny bit of flaking at lip as noted.