This lot features two original boxes of U.S. military .45 caliber M1911 ammunition manufactured by Frankford Arsenal, marked Ammunition Lot No. 511. Each box is labeled for 20 cartridges, for a total of 40 rounds. These early military cartridges were produced for use in the Model 1911 pistol and represent classic U.S. service ammunition from the early smokeless powder era.

One box remains unopened with intact original wrapping, while the second has been opened, allowing inspection of the cartridges. The rounds exhibit light, even tarnishing consistent with age, with clean brass cases and copper-jacketed projectiles that present well overall. The unopened box's contents are presumed to be in similar very good condition based on external preservation.

Both boxes retain strong original labels with clear markings, though there is expected edge wear, minor fraying, and light handling wear to the paper consistent with age. This is a desirable set of early U.S. military .45 ACP ammunition, well suited for collectors of Model 1911 history, Frankford Arsenal production, or early 20th century U.S. ordnance.