Original U.S. WWI MkII Pineapple Grenade Converted for Homefront Use -War Savings Stamps Promotional Piggy Bank Breda M-37 The US Army's Rock Island

The US Army's Rock Island Arsenal was a main manufacturer of the early carts but as war progressed other companies such as John Wood Mfg Company

These initials are generally found on M1942 helmets since they were placed into production mid-war at about the time the firm changed its designation

Transferred to Southeast Air District (later Third Air Force) in late 1941

To infringe on the patent

Under this it is size marked 57

Original U.S. WWI MkII Pineapple Grenade Converted for Homefront Use -War Savings Stamps Promotional Piggy Bank Breda M-37 The US Army's Rock IslandOriginal Item: Only One Available. This hand grenade bank is loaned with the understanding that the bank named on the reverse side will donate the same as a reward for patriotic thrift when the holder saves and invests in one or more War Savings Stamps. These hand grenade savings banks are real MKII pineapple grenades, but were rendered inert by having the blasting cap fuse taken out as well as the explosive material inside. They are the exact same