Anyone know anything about these ?
 

Is this from a set ? Just a regional thing ?

Blank back or postcard back?
 

What's on the back? They look like standard studio shots that might have been on RPPCs. Without seeing the back, I'd doubt they are from a set.

Here is the promo card that went with them .
 

Looks like this

eBay listing
Looks like they are RPPCs as I thought. Nice pieces.

I'm guessing they were just taken for the player, since the backs don't seem to be advertising anything. I'm guessing the ad piece was collected, but is independent of these cards.