well i just got a few of them just like that for a two older colts and the seller told me they were mid 50's ..i am told the older ones said Melvin Tyler on them and just seen one sell for crazy money on ebay too ...i have bought four that look as nice or nicer than that one in the past year...they are more common that u think...i was shocked too when i found my first one in like new condition...God Bless,John