The gun in Post 12 is the one on the auction site. I'm a little interested in it if the bidding doesn't get out of hand. I tried examining it using the zoom feature, but it really looks like someone tried to scratch something on to the frame. Here is my attempt to zoom in and take a picture with my phone, email it to myself, save it to my hard drive and upload it here. There must be an easier way...
Perhaps, it's the owner's initial "M"?
Yep an M. It looks like a brand and would be read "Circle Lazy M" because the M is on its side.