Hey Mike,
Don't want you to think that no-one is reading your posts...
My collection is out in Palm Springs and I head out that way in a couple weeks.
I've got a 47' BB Jackie (or so I hope
) out there slabbed by SGC that I can take a photo of back and front and then post.
No comparison Sports Star card unfortunately, but at least another copy you can have an image of for analysis.
All the best,
Daniel