1980 baseball postcards

[mybestbretts]

Is there anyone that has a handle on makers of 1980's Postcards.
I know there is McCarthy but who else. I have seen some with blank backs and no company id, any thoughts? Size 3 1/2 x 5 1/2

[MacDice]

Team issued? I know the Mariners did player headshot postcards during that era. So far I have collected around 150 of them