Hey, I'm looking to purchase a ladies Cartier Tank watch, but I found a Baume & Mercier Tank on eBay that is almost identical looks-wise. It's from the late 1970s, the case is solid 18k gold, and it's in good condition. Priced at $1,000. Is it worth it? Should I hold out for a Cartier Tank, even if I have to buy just a gold-plated one? My budget is $1,200 or less, and Cartier gets pricey very quickly. Thanks for your help, guys!