Which retail innovation, introduced during WWII, revolutionized the sale of military memorabilia and is credited with creating the modern military collectibles market?

Throughout history, military conflicts have spawned unique retail and marketing phenomena. From war bonds to recruitment campaigns, military-themed consumer products have shaped public perception and commercial trends. This poll explores a fascinating aspect of military retail history that transformed how military memorabilia was marketed to civilians. Test your knowledge about this intersection of military history and consumer culture!

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The PX (Post Exchange) System that allowed civilians to purchase authentic military surplus
Bradford Exchange's 'Authenticated Series' with certificates of authenticity
War bond promotional giveaways that included miniature replicas of military equipment
Montgomery Ward's 'Victory Collection' featuring licensed reproductions of military insignia