I think the decks you're looking for are the bordered 'bumblebee' playing cards.
They have gotten fairly hard to find in recent years and can sell for a reasonable sums.
You can buy unused casino decks from this era with 'stinger' bleeds that will perform almost identically fo far cheaper off ebay.
Otherwise you may have to join some playing card groups or keep an eye on ebay if any come up.
B.