Pack of Pan Am playing cards

I picked this pack up last Sunday at the same time I picked up the Gold Leaf ashtray. As you can see, the pack is in very good condition and although not factory sealed, they were presented for sale in an old plastic wrapper. All 52 cards are in there plus two jokers. I can't even fathom an age but I'm very pleased to have found this little gem. As you can see from the back of the pack, there is aging and the cards themselves are ever so slightly tarnished at the edge which leads me to conclude that they're not fakes. I'm very pleased to have tracked this pack of cards down.