New Parker, no letter

[Blind Dog]

This is a most interesting thread for me, not just because John's gun is drop dead beautiful, but my 12465 is a close shirt tail relative; differences being, it has 30" plain twist barrels, no checking and no engraving except "Parker Bros." The barrel flats show only "U 5"; the lug shows the sn and frame size (2). The water table shows only the sn.

[Pa SxS]

These early grade 3 hammer guns had considerably less engraving than their top lever grade 3 guns. Dean, John, and my gun (http://parkerguns.org/forums/album.php?albumid=436) have the same engraving pattern and ball grips. Does anyone have a grade 3 lifter with similar engraving to the grade 3 top levers or was the sparse engraving standard on grade 3 lifters? My S/N is in the 17K range circa 1880.