From the LC Smith site and yours is a Quality F
The Smith hammer gun was available in either 10 or 12 gauge. The following were the Qualities offered in the 1884 catalog:
Quality F Best English stub twist barrels, American walnut stock, pistol grip, checkered and engraved, $55.
Quality E Good Damascus steel barrels, good American walnut stock, checkered and engraved, pistol grip, $70.
Quality D Fine Damascus steel barrels, good imported English walnut stock, nicely checkered and engraved, pistol grip, $95.
Quality C Fine Damascus steel barrels, fine imported English walnut stock, fine checkering and engraving, pistol grip, $125.
Quality B Extra fine Damascus steel barrels, finer imported English walnut stock, fine checkering and engraving, pistol grip, $150.
Quality A Very fine Damascus steel barrels, extra fine imported English walnut stock, extra fine checkering and engraving, pistol grip, $200.
http://lcsmith.org/shotguns/1880grades.html