...Albert. ID # would be good. It would also save many hours each time a new updated book comes out and we have to redo our check off procedure.(just finished that annual job,aprox. 30hrs.)
Variations? I make it easy. If at first glance I don't see no difference on the front of two cards, I don't need it.Reverse I don't care about.Everbody collects what they like, but this makes it easy and enjoyable to me.
Have a good time in Vegas Albert. Max