Why Buy from Gowen Militaria? Gowen Militaria (formerly Richard Gowen Militaria) is America 's original specialist in East German militaria. We date back to 1990 when the DDR still existed. Our first venture was to negotiate with the East German Defense Ministry for the direct purchase of many collectibles never before seen in quantity in the . We were the first to import NVA ("VOPO") helmets into the country, along with Stasi uniforms, visor hats, field equipment and numerous insignia.