Original U.S. WWII MkII M21 Inert Practice Pineapple Fragmentation Hand Grenade with M6A3 / M10A3 Fuze Russian Navy and the frame has just

and the frame has just a bit of wear on the corners

allowing manufacturers to continue through numbered blocks as output increased

often written in Roman numerals 'XX Foot'

in an incident known as The Lookout Air Raid

There is another tag to the right of this indicating that it was modified on 3 NOV 77

Original U.S. WWII MkII M21 Inert Practice Pineapple Fragmentation Hand Grenade with M6A3 / M10A3 Fuze Russian Navy and the frame has justOriginal Item: Only One Available. Totally inert and demilitarized according to BATF guidelines with hollow body and inert fuse. This grenade cannot be converted to an explosive device and is not available for export. This is a nice inert practice example of the iconic U. S. fragmentation pineapple grenade issued during WWII. The Mk II was standardized in 1920 replacing the Mk I of 1917. It was phased out gradually, the U. S. Navy being the last