Original U.S. WWII Inert MkII Yellow Early War High Explosive Pineapple Grenade with M10A2 Fuze French Artwork & Posters The hat is roughly a

The hat is roughly a size 7¼

which was promulgated and became effective on August 13

and it is retained at over 90% on the rear

While the other reads:

injuring Glidermen and Glider Pilots alike

Original U.S. WWII Inert MkII Yellow Early War High Explosive Pineapple Grenade with M10A2 Fuze French Artwork & Posters The hat is roughly aOriginal 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 an 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 users, on 2 April 1945 the Mk II and Mk