Re: Any "old toy" experts out there?
I checked in my O'Brien's Toy editions and could not find your 'cowboy,' which is neither good nor bad because every toy made can't be listed. If I'm able to locate it in some of my other books, I'll make a post. Hopefully you will be able to find some marking on the tin.
From my experience, this is my opinion: I think this battery operated tin lithograph shooting/walking cowboy was made in Japan during the late 1950's to early 1960's or in the USA by Marx. Japan was the leading country for tin litho toys during that time, which started out as wind-ups then advancing to battery ops. The very early ones were all litho tin, then later cloth, fur, plastic, etc. were added. The Louis Marx Toy Co. (1919-1978) from the USA also made quality tin litho toys. There logo is MAR with an X in through the middle, so you might want to look on your cowboy for that mark. I feel 90% sure your cowboy is marked somewhere. As far as value, as you know there's a difference between value and sale price. I think advertised correctly and photographed properly, this cowboy (depending on working condition and general condition) would sell for $85.00+ on ebay 'if' listed at the right time. People generally buy alot of this type of toys between late September to early-mid November as Christmas gifts for collectors.
Hopefully I've helped somewhat. Breezie