1969 OPC 4 in 1
 

Does anyone know where I can locate these cards? I have several but still need 6 to complete the set. Also what would the set bring if the big cards were graded 7-9 and the rest 6-8 with there only being 2 6's? Thank you for your help!

I see OPC 4-in-1's on ebay all the time.