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					Originally Posted by francantolin  Is it a spanish model ?does anybody know the stamps ?
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 It appears to be Spanish and dating to the last quarter of the 19th century.
There is a very similar one in Forton's Antique Clasp Knive's, on page 23, item 022. The English annotation reads as follows:
19th century clasp knife. It has bullhorn scales with lines of brass rivets, a ring closing mechanism and a four faced blade with a cutler's mark resembling a castle and the capital letter F.
I will add that the lock is typically Spanish and the ring pull became popular around 1875.
Cheers
Chris