Any info on this Bobby Orr card?

[Klaatu Barada]

Hi guys,

My first post. Just found out 9 postcards in my garage, from the NHLPA Pro Star Promotions. All of them in very nice condition. I think this was released in 1971. Bring back a lot of memories ! I have been able to find 8 of them on different sites, but nothing on the 9th, showing Bobby Orr, Yvan Cournoyer and Frank Mahovlich. I am really curious… Is this something rare?

Thanks !

[ZappBrannigan]

Cool find.