We have 11 Metal Belt Buckles nos from a jewelry factory.  They date anywhere from the 1970's to within the last few years - use your judgement on vintage - I would say they may be 1/2 vintage and the balance on the newer side.....  There are 4 copper tone - I'm not certain if they are copper or not.  None of them stick to a magnet.  There is 5 silver tone and 1 gold tone.  The gold tone one has fairly deep scratches on shiny surface, 1 of the silver ones has N.G. written in marker on the front and the ? copper ones are tarnished and discolored (I have to say these have the most vintage appeal to me....).  They all accomadate a belt 1 1/4" - 1 3/8" in W.