Shotglass Set

A set of three decals on shotglasses. I think it may have been a set of four decals, but I have not found the final one. There is a distinctive red back to each decal. I am not sure if these are from the 50's or not. I think it may be later, but have no proof of that. They certainly have a flair to them that says they are older.

The shotglass is a different shape, but the decal certainly belongs to this set.