Prime Signatures Inserts - Base, Gold and Holosilver information :
Cards #7,10,33,44 and 56 do not exist based on my research. Cards #2,6,12,18 have some interesting things to note. #2 Gordie Howe, #6 Sydney Crosby and #12 Brendan Smith are the only cards with SNs as follows 25(B), 10(G) and 5(HS). I have not confirmed the Howe or Crosby cards but the Smith cards I have found except for the SN10(G). #18 Dylan Olsen though is as follows, His base is SN31 yet his Gold is SN50 and his Holosilver is SN25. These cards I have visually confirmed to be true. Odd but true.
Now on to #14,23,29,35,41,45,65 and 67. These eight cards will be found in 2012-13 Panini Prime as a separate set listed under inserts. I have a link you can follow to read about these cards that is interesting :
https://becketterrors.wordpress.com/2013/09/02/2011-12-panini-prime-signatures-cards-distributed-with-2012-13-panini-prime-as-bonus-cards/
All have the standard SNs except for the Pekka Rinne he is SN50(B), 25(G) and 10(HS).
Finally cards #62 and #20. I found with my research that both of these cards were inserted into 2013-14 Panini Prime and that for #62 Tomas Kubalik this is suppose to be the only place the card was available. It has all three versions available with the standard SN for each as I have visually identified all of them. As for #20 Colin Wilson it was released with the original 2011-12 set as well.