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Dear Readers,  I just found a music box at an auction in Little
Washington, VA, that had been in an old house forever.  It's the
smallest one I've seen, and I can't find anything on the web like
it.  Can anyone tell me something about it?

Overall dimensions of inlaid box with curved top are 7" x 4-1/8" x
3-1/2" high.  It plays 6 tunes, including Bleu Danube Valse, using a
front and a side lever, with key in the bottom.  Glass covers the
mechanism.  The cylinder is about 3-3/8" long by 3/4" diameter, with
42 picks.  The card has the Swiss Cross on one side and an emblem with
M F and date 1840.  What I take to be a serial number, 1407, is stamped
on the mechanism.  It plays amazingly well for such a small device.

Any information about history, rarity, etc., would be appreciated.

Thanks,  Roger Rydin