Cartier Tank Must 925 Silver “Blue Roman” LM Ref. 690006 (circa 1990s)WHY WE CURATED IT: We often think of vintage Must de Cartier Tanks as the most affordable Cartiers today. But not enough is said about their historical importance in saving the brand. The 3 decades post WWII (late 40s to late 70s) was economic boom time in France with a growing nouveau riche clamouring for Cartier watches and luxury goods. But by the late 70s, things slowed, and super accurate yet inexpensive quartz watches presented a double whammy.