My wife has a similar quartz Must de Cartier tank. Sadly, we've been disappointed with the quality of the watch as the gold vermeil plating has come off in chunks, exposing the silver case underneath. She's not particularly tough on watches, so it was quite surprising that the gold would peel off.
With respect to the OP watch, I think you can do better as the watch itself is in quite poor condition with water damage to the dial and significant scratches and wear on the case. That particular dial design is fairly common for Must de Cartier, so you can find another without looking too long or too hard. My guess is that a good quality example (which this is not) would be in the US$ 1000 range. Perhaps a little more if it came with box and papers.
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