Which retail innovation first popularized high-quality, mass-produced military collectibles with a 'satisfaction guarantee' in the 1960s, revolutionizing the war memorabilia market?

Throughout history, military campaigns and conflicts have spawned massive consumer industries - from recruitment posters to collectible items. Today's military history enthusiasts represent a multi-billion dollar market for memorabilia, replicas, and educational products. This poll explores an interesting aspect of how military history has been commercialized and the retail innovations that have emerged to serve this specialized market.

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The Franklin Mint's 'Soldiers of the World' collection, which introduced subscription-based collectible figurines
Sears Roebuck's 'Military Heritage' catalog section, which offered mail-order Civil War replicas
The Smithsonian Institution's gift shop expansion, which pioneered museum-quality reproductions for home purchase
Montgomery Ward's 'Battlefield Treasures' program, which created the first authentication certificates for historical items