Check the listing for details. Original WW2 US Army 21st Engineer Battalion DUI Pinback Crest (NS Meyer). Condition: New. Listed at 9.95 USD. Original, Second World War period unit crest (distinctive unit insignia) for US Army 21st Engineer Battalion. Made in USA by N.S. Meyer, it is a one-piece metal/enamel construction with pin fastener on the reverse side. Still on factory manufacturer card. We do combine postage, so your shipping costs will not increase by much if you buy more than one item. Please check our other auctions for more military field equipment, uniforms, helmets, hats, insignia, patches, badges, bayonets, knives, multi-plier tools, and other weapon-related gear. Historical Military Sales has been in business since 1996 and offers a full range of current TA-50 and other US military equipment as well as the largest selection of authentic, vintage militaria in Washington State.