If you take a look at these, you'll see similar examples including multiple players from a single team.
Regardless of the team or it's importance, they're a lot harder than team photo postcards (RPPC), and being that you have matched players, it's a nice group.
I hope this helps.
https://www.classicauctions.net/LotD...ntoryid=154717
*Edit I just noticed your postcard in the group.