US Cartridge Company 22 LR Ammo NRA Issue Lowell Mass Full Box

This is a full box, 50 original rounds, of .22LR ammunition manufactured by the US Cartridge Company in Lowell Mass with Lesmok powder part of the N.R.A. Target issues.  The early 1920's one piece box is in fine condition with a tape repair to the right flap showing some edge and corner wear and a seam split on one edge of the inside tray.  The cartridges are in fine condition with some age darkening and verdigris.   Identified as US-51 LR-7(b) in Roger Huegel's online .22 Rim Fire Box ID Reference based on the original Dunn classification system.