Thanks for all the post, some great info on this thread!
I remember bidding on that salesman sample, really wishing I had bid much harder on it back then.
Adam could you please post one of the 55's with the Mutoscope back, I have a couple and they all have the same as the PC exhibits.
Here are a couple more different backs, the triple nickle books is on a 47-66 Lemon, and the Playland is on a 39 Salutation Dizzy Dean.