Here are a couple of my favorite lifters. The top one is a 12 ga. and the bottom is a 2 frame 10. They are 3 serial numbers apart.

Great stuff. I love hammer guns. The artistry on them is incredible. Thanks for the great pics everyone and keep them coming. It's a good education for all of us that is much appreciated. Here's my contribution. My 1886 10ga. I'll try to add a shot of the floorplate engraving later.

Great looking 10, what grade is it Rich?

There's a 3 on the rear lug, which I think is the grade #.

and then there's this 1886 10 ga hammer gun :(

http://www.shotgunworld.com/bbs/cpg1...34_%285%29.JPG

Hammer guns
 

Jeff what is the serials of the D grade that has the rabbit on the side. I have 16429 that is engraved like the bottom one.

So much for my memory, they are 5 numbers off. The top is 16032 and the bottom is 16027.

Richard,
The 3 on the back lug would be the frame size. It appears to me to have G engraving. The locks look like my 10 ga G.

This is a 12ga top action 'P' grade #52875.

Rich, I may be wrong but I think the 3 on the barrel lug is the frame size (but that can best be determined by measuring the distance between the firing pins) and, judging by the engraving and the checkering of the forend I would say that is a Grade 2 or G grade.
It is a beautiful Parker in any case and in great condition. Dean