The factory letter, from MS Huber, only states "Factory Engraved - Yes" and a comment that the name of the engraver is not in the records. I love the gun. I looked for 10 years for a nice one. I have seen low grade M1978s that were approaching factory new condition, but this one is has high condition and is of much higher grade.Does your Factory Letter Indicate the Level of Engraving?-- It should. 1878 Shotguns were offered in 6 Engraving Grades,-- 1 through 6---With Grade 1 just a borderline, & Grade 6 Highly embellished. Yours appears to be at least a 4 or 5.-- Most of the 78' Engraving came from the shop of Cuno Helfricht, & yours looks to be of his style. As Kid said, Colt rarely named the engraver on 19th Century guns. That practice of naming the engraver, while still rare, came later. At any rate, a beautiful piece, done by the hand of a master.