I found an 1878 that is fully engraved with case.

I have never seen one with this much engraving.

It certainly is more than a grade 3, as we know them.

Steve Cobb has it on his site. Not a cheap gun!
http://www.stevecobbguns.com/amersg.htm








This pattern was produced in Belgium as "English Damascus" 2nd or 3rd quality.
http://www.damascus-barrels.com/Image_Barrels_2.html









Pete