Here's one of the most compelling Cartier watches ever produced -- the 18k Ceinture. As you'll see if you read the article link below, the watch was reintroduced in 1973-74 in the signature 27mm size...decent sized for men at the time.
This is the sought-after manual wind movement, keeping excellent time. With the original Cartier strap but aftermarket clasp.
All you need to know is here: