Curious 56-56 Spencer headstamp
Good Day! I was looking around the old Fort Stambaugh, Wyoming site this weekend and found what apears to be a 56-56 Spencer Rimfire cartridge case with a headstamp " V V & Co.". I can't seem to find any info for this headstamp. Does anyone have any information that may hel. Fort Stambaugh was established near Atlantic City, Wyomiing in 1870 and was closed in 1878 or 1880. Thanks in advance.