This is a vintage sterling charm of a wild cat.  There is a hang tag attached to the charm which says "Montana at the Fair" on it, which could be removed if you want.  It is unmarked sterling, and has a great patina.  The hang tag is shiny.  The charm measures 1/2 of an inch high and just over 7/8 of an inch at its widest and weighs 4.7 grams.