Doc, I know you are way over my head when it comes to this,but I have two old Pearsons.One is my first bow,got it when I was 12,(I'm 55 now). the second is a Pony I traded a BB gun for when I was 16.
The first one, the oldest has the Spec's written just like the one in the picture above. It could be shot off either side. The Pony has the Cat# number liked you desribed, and then the Spec's.