This is a scarce example of a World War II M1928A1 Thompson submachine gun manufactured by the Savage Arms Company under license from the Auto-Ordnance Company, with an "S-" prefix serial number. Blade front sight on the Auto-Ordnance/Thompson marked Cutts compensator, Lyman folding ladder rear sight, with the "US MODEL OF 1928A1", "RLB" and "GEG" on the left side of the receiver, Bridgeport address and eight-line patent markings on the right, and "TOMMY GUN" on top. A set of British proofs are also present, with a "scimitar/NP" and tonnage marks on the barrel, faint "crown/crossed scepter" proof on the right side of the receiver, and "crown/GP" on top of the charging handle. While not documented, the combination of these proofs and the positioning of the sling swivels (left side of front pistol grip and top of buttstock) suggest transfer to Great Britain for military use during World War II as part of Lend-Lease, and later return to the United States. "MPD61" is added to the left side of the receiver, suggesting law enforcement use after leaving military inventory. Internals are 1928 pattern, with "S" marked bolt and Blish lock, and an unmarked charging handle, spring guide and oiler. The trigger housing is numbered to match the receiver, with smooth control switches. Fitted with grooved pistol grips and a quick-detach buttstock, modified as previously noted. Included with the lot are one Seymore Products stick magazine and an Auto-Ordnance Type "L" 50-round drum.