Chloe Paddington
You think the Paddy? I don't own one, because I can't imagine using it much. But I love it! If you are right, maybe I can pick one up on the secondary market some day, and it won't matter if I use it much...
Timeless: Hermes (Birkin/Kelly), Chanel flap (2.55)
Gone tomorrow: pretty much everything else, although I think the major design houses will stay and come up with new designs periodically