Box shows wear. There are some missing parts, according to the "What you Get" on the box. (Bayonet etc) I believe the set came with multiple grenades, and one is included here.
There are definitely some extras included, including a 2nd "Bivouac" (Browning-Style) Machine gun, Extra M-1 Garand, Comm. copper Wire Spool, Comm. Backpack/Rucksack with Shovel, Map Case With Map, Extra Helmet, Extra Uniform (Needs Ironing;) Flare Gun, Single Loose Bazooka Shell, and a second ammo can (Missing handle)