http://www.ebay.com/itm/161110021443

eBay user "connect_net" may be someone to look out for - they're also selling Natalie Portman, Tom Cruise, Michael Keaton and Gene Wilder sigs from a quick glance. They're selling a Kirk Alyn signature on a photo that's a cropped version of the artwork prepared for the 2006 release of the Superman Serials on DVD. Dead giveaway being that Alyn died in 1999. Shame too - his signature is relatively affordable and he was a very good signer based on everything I've heard.