I have 3 copper or brass plaques that are stamped on the back that read Trafford Plaques Old Masters Series no one, Made In England Patend pending. Are these anything? Antique?

Does one of them have a reproduction of the painting "Blue Boy" on it?

Actually there are four... Yes, one is the blueboy, boy with rabbit, pinkie and age of innocence.

Can anyone respond to this with anything I don't already know?

I have 2 here, the blue boy and Mrs Siddons. If anyone is collecting them please let me know