Which innovative sales technique was first used to sell a World War II field marshal's baton for over $1 million in 2007, revolutionizing high-end military collectible marketing?

The military memorabilia retail market has evolved dramatically over the past few decades, becoming a sophisticated industry with specialized marketing approaches. Historical artifacts, replicas, and collectibles attract enthusiasts from casual collectors to serious investors. This trivia question focuses on a landmark product marketing campaign that revolutionized how premium military artifacts are sold to high-end collectors.

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Auction house private preview events with authentication certificates and provenance histories
Interactive AR/VR exhibitions allowing remote collectors to examine artifacts in 3D detail
Time-limited NFT ownership certificates paired with physical artifact delivery
Subscription-based access to rotating private collections with first purchase options