While I don't have an opinion on your card, I do know that in the past cut signature cards have had varying levels of questionable authenticity. There was a booklet a while back that had Ruth and Gehrig and both signatures were considered forgeries by the hobby.
Here's a brief article on the card. It was a 2010 Topps Tributes Legendary Line Ups card of the 1927 Yankees.
http://www.sportscollectorsdaily.com...led-consigned/