the 39 clues most rare card code is P32979TXXP
P32pdrcnxp and P3RW4FPNXP
it's the 39 CLUES and here is a code it is:P4C4M9DKXP
MANINBLACK and Hagia Sophia,P.S that's not the code. f4g3fdrckd
a 39 clues ultra rare card code is P247JJMMXP
There is no such code, however, by buying cards and completing missions you can get clues. I would post some ultra-rare card codes, but I don't have any that I haven't already used. My top tip is to save your card replicators, because they can be used for those hard-to-find ultra-rare cards. You can give the codes to this site because the codes are reusable.
type in P63NF9MXXP
The code for card #60 X-Ray is: P4C4M9DKXP
p32979txxp and P3PPKN47XP
p24hjg3hxp
this is a good code P36HTT2WXP
The code is: P2CN2PGGXP
that's dumb