Maybe five or six years ago a friend found a small stack of these Skelly All-American Space Fleet Cards. They came from the estate of a man who owned a Skelly station back in the 1950's. I ended up selling all of 'em and these were the scans I used on ebay.
Yeah, I continue to kick myself for not keeping a set. Easy come, easy go!
A complete set of 24 sold at Mastro Auctions back in February and you can view the set here.
You can also view the complete set here.