HI, My father served in WW2, Japan during the last years of the War. He brought home some items which have been stored in a trunk all these years. He passed away before I was old enough to ask questions. This "thing" I have no idea about. No writing on it or in the box it came in.
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The thing measures 1 1/4" long and about 3/8" across. It is made entirely of plastic. The small grey round thing on the top doesn't pull out and I have not forced it. Not sure if it even comes out. However, there is no other way INTO the thing. Nothing in it that I can see, no way to open it. The drawing is that of a repeating design that runs half way around the thing. No other design or writing of any kind. Came in a plain wooden box and was cushioned with cotton material.
My gosh, this thing is driving me nuts and I hope one of you can identify it. BTW, thanks for the picture inserting tutorial. I did get an extra one in there but it was great instruction! Jas