I think I got this. The left, damaged stamp is Scott 23b and the right pair is Scott 45. The color on the right pair looks a little washed out as it should be a green.

The Scott 23b is a little odd in that the frame line appears different than my other examples. Either over-inked, or doubled. Any thoughts?

The right pair also looks a little odd. Washed out in several areas, and lots of odd looking letters. I don't have any comparisons, but I also see a horizontal line in the top and bottom frame lines. Is this normal? Thanks in advance.

