Mark,
I love the plate. I too have never seen one before.
I'm not sure if this item was previously posted, but here's a set of 1970 Orioles matchbooks. Inside each matchbook is the 1970 O's schedule. There are 24 different matchbooks. The obvious omissions are Terry Crowley and Marcelino Lopez. Both played much more than Bobby Floyd, who was traded mid season.
1970 Orioles Matchbooks.jpg