This ref. 1720 Cartier Tank Americaine is one I have been looking to pick up for a reasonable price for a few months now.
link And while I may be blowing up my eBay saved searches spot, the people need to know. This is the perfect "vintage" Cartier look for $6K. As an obscure, "ladies" size from the late 1990s and early 2000s,
link there really aren't a bunch floating around for sale at any one time but if you can
link find one in good shape, grab it.