This is not entirely uncommon when it comes to tank watch cases. Indeed, here is an image of the movement from the trope namer, a Cartier Tank: https://smhttp-

This is not entirely uncommon when it comes to tank watch cases. Indeed, here is an image of the movement from the trope namer, a Cartier Tank: https://smhttp-ssl-39255.nexcesscdn.net/wp-content/uploads/2015/12/Clear-Image-of-the-JLC-Movement-in-a-Cartier-1500x995.jpg https://smhttp-ssl-39255.nexcesscdn.net/wp-content/uploads/2...