Which controversial retail strategy did the Museum of Military History in Vienna implement in 2019 that transformed how military artifacts are marketed?

Military history enthusiasts have fueled a growing market for authentic battlefield memorabilia and reproductions. This specialized retail sector has seen significant evolution in recent decades, with changing regulations, authentication technologies, and ethical considerations influencing product design and retail strategies. Test your knowledge about this unique intersection of military history and retail trends!

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They introduced blockchain authentication for all WWII artifacts, setting an industry standard now used by most military memorabilia retailers
They banned all Nazi memorabilia sales while expanding their Soviet-era collection, creating a market imbalance
They pioneered the 'battlefield subscription box' concept, sending monthly reproductions of historical military items
They launched an exclusive line of 3D-printed replicas of weapons that were previously restricted from commercial reproduction