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."

Deb Hoffman's record-setting collection of Winnie the Pooh items contains nearly 18,000 pieces and includes a Winnie the Pooh costume from Walt Disney World and a set of Agnes Brush Winnie the Pooh character stuffed animals from the 1940s.

Artist Jim Engel is the proud owner of a collection of comic book art that he has spent over five decades collecting, and Josh Kelley hopes to trade a statue of Doc Savage for one of Jim's items.

Walter Krueger shows Lisa through his collection of all things related to "The Wizard of Oz," including a first edition book by L. Frank Baum, promotional items for the film and costumes worn in the film.

Musician Jim Peterik's collection of over 200 guitars includes a 1968 Les Paul gold top and a 1958 Gibson Flying V, but Dan Orkin of Reverb hopes to make a trade with a 1964 Stratocaster.

Dan Theilmann's collection of Coca-Cola items includes a Vendo 23 vending machine from the 1960s and cufflinks from 1929, but equally avid collector Darrell has brought a Coca-Cola tire display in hopes of making a trade with Dan.

Sean Kelly's passion for video gaming has turned into a business, a museum and a collection that includes a prototype of the Sega Neptune System, but he may be tempted to make a trade for a copy of the rare video game Magic Card.

Zach Vege's collection of all things KISS includes Ace Frehley designed guitars, an original KISS pinball machine, KISS trading cards, and the rare original promotional poster sent to radio stations with the first KISS record.

Appraiser Kate Martin has a document signed by John Hancock that she hopes to trade with Paul Lisnek, who has a collection that includes locks of hair from George Washington, Abraham Lincoln and John F. Kennedy.

Rick Goldschmidt and his son have collections that include original Rankin/Bass relics, a limited edition coloring book given to children on the set of "The Dick Van Dyke Show" and Captain Action toys.

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.

Christen Carter's pinback button collection includes buttons from George Washington's inauguration, rare buttons of Oswald the Lucky Rabbit, and Prohibition era buttons, but she may consider a trade for a rare Muhammad Ali button.

Candace Jordan's book collection includes a first-edition Winnie-the-Pooh book signed by both the author and illustrator, and a signed copy of the first and very limited edition "The Greatest Gift," the basis for "It's a Wonderful Life."