The 100 original pieces produced by Isokon are now the most collectible.

No particular genre is the most collectible, said specialists.

Makes it one of the most collectible.

So called "complicated" watches, or those that display more than hours and minutes, are among the most collectible.

Monroe, one of the most collectible celebrities, was pictured driving in the car with her husband, playwright Arthur Miller, shortly after their June 1956 wedding.