Posted By:
PaulThere was an article recently in Old Cardboard on the distribution of 51 Topps cards. The Connie Mack All Stars were packaged with the regular cards. I can't remember for sure, but I believe the article said you could buy a few of the regular cards (maybe two?) with one All Star, or the complete set with one (or maybe a few) All Stars.
I've never heard of rounded corners on the All Stars.
Neat ad. Where did you find it?