I had seen a similar PSA logo recently on an RR auction. D not know much about it, but a google search is less than flattering. Anyhow, they use a similar logo, so, again, a good photoshop artist can do the job
http://www.rrauction.com/bidtracker_detail.cfm?IN=931
If anyone looks at it, pl provide opinions on the Gehrig sig. I doubt I will bid it (too many negative comments) but, as long as one vistis the site