Appraiser Daniel Strebin puts an estimated value on Dwight Cleveland's collection of over 4,500 vintage movie posters and offers to trade a one-of-a-kind poster from the early 20th-century film "Undine."

Firefighter Gordie Norde's collection of firefighter items includes vintage fire extinguishers, fire helmets with shields, and a vintage toy firehouse, but he may be tempted to trade an item for a rare model firetruck.