I thought this was an interesting item, I see quite a few of these JUST A THIMBLE FULL shot glasses, most seem to be made by Davidson, this one was made by Sowerby has the trade mark on the base, its looks slightly more like a glass than a thimble with a flat base, it comes complete with a metal thimble shot measure and what would appear to be the original box which is signed on the top A thimble full, on the bottom of the box , Made in Bavaria
Roy