Alphabet Commercial maybe 1921 with stock lug
*serial number, with letter suffix: 770 k.
*proof marks, left receiver: Crown over N, upright.
*proof marks, breech block: Lazy crown over N on left breech block.
*proof marks, barrel: Under barrel above serial number.
*right receiver proofs: None.
*Toggle mark: DWM
*Caliber: .30.
*Export marked: Not marked.
*Chamber marked: Not marked.
*Safe mark: GEISCHERT.
*Front sight base marked with 1.
