Ok, I swear this is the last deck I’m buying for a while, but it was only a couple of € on Ebay, and it was vintage, so yeah.

It is actually a Schafkopf deck (literally, sheep head), and it is comprised of 36 cards. As far as I can tell, not all Schafkopf reading traditions use all 36 cards, as some discard the sixes.

MQS