This is a really nice "Bosca" Flask.  It is leather wrapped high polished metal.  It is signed on the back and says " Hand Stained Leather".  On the bottom is an emblem/mark.  It also says "Made in Germany.  Tin Lined.  8oz".  The screw on cap has a safety ring attachment.  There is a patent number on it  "Pat 3422-238.3

Because the metal is highly polished, there are a few small scratches on it.  I believe they probably could be buffed out.  There is a very small ding in the top.  If these are issues that would bother you, please don't purchase this item.

It is a beautiful rich mahogany color.  It is in overall very good condition.  A very classic and classy style...

I went to the Bosca Website and there were no flasks in the search so apparantely this piece is retired.

It's a very nice quality piece. 

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Apologies that the pics would not show the high polished top and bottom with the signature, info and patent #.  I tried to take new pics 4 times before I realized that it just reflected the light too much to be able to get a pic of it.