A Killer Cap

A seller brings in an antique high wheel bike; Chumlee sells one of Rick's prized Japanese katanas to UFC President Dana White; Rick tries to score a restored grand piano from the 1800s and an original Walkman cassette player.

The first American coin ever made; a 'Jetsons' lunchbox; a hood ornament from an Austrian automaker; an ancient Latin book.

Illustrations from the children's book, 'Where the Wild Things Are;' Beatles vinyl records; antique hot dog bun warmer; an electric hot dog cooker; a Princess Leia action figure signed by actress Carrie Fisher.

A drawing by musician John Lennon; Sen. William Sharon's engraved menu from the Comstock Lode mines; a Rolex water pressure tester; a 1950s Buddy Lee doll.

Corey gets a signed letter from the White Sox; Rick looks at a John Wilkes Booth poster; Rick and Chum check out some peacock wicker furniture; Rick views a German album.

Chum huddles up for a chance to buy an early 20th century football. Can he get this deal across the goal line before the seller hikes up the price? Next, a life-size Spider-Man flies into Rick's web. Will his spidey senses tingle for an offer?

When a seller speeds into the shop with an iconic piece of Sammy Hagar memorabilia, Corey calls for backup; Rick has a chance to buy a vintage whiskey strap.

Apollo 11 documents; a Harley Davidson 1962 Topper; a Renoir etching; the guys leave the shop for a little friendly competition.

A pair of vintage rock t-shirts; Gumby and Pokey toys; a poster by Israeli artist Gad Ullman; Corey and Chum look at unopened Atari games.

Chum becomes the chosen one when a seller brings in "Buffy the Vampire Slayer" figurines; an artist's letter makes an impression on Rick; an old vending machine and a 1949 fire truck light come into the shop.

A collection of James Bond movie trading cards; an old Chinese bell may be music to Corey's ears if he can strike a deal; items from some of history's most notorious criminals come into the shop.

A test pressing of the Eagles mega-hit, "Hotel California"; Chum checks out a ring from the "Little Orphan Annie" radio show; a customer brings in a model of Leonardo da Vinci's flying machine; Rick examines blueprints by Frank Lloyd Wright.

Chumlee gets ready to rumble when a rare wrestling figure comes into the shop; a portable craps table is smuggled in; Rick checks out a vintage Eclipse windmill.

A seller brings in a signed copy of "The Coming of the Saucers"; a seller claims to have a painting by artist Ralph Blakelock; a "We Buy Gold" sign from the 1900s; Kobe Bryant memorabilia.

A set of San Francisco 49ers Super Bowl rings; a spear gun used to hunt marine life; a pair of 18th-century shoe protectors; a miniature model of the Traders Bank of Canada.

A sword with an attached pistol from the 1700s; a portrait of legendary film and theater actor John Barrymore; an antique navigational timepiece used by ships in the 19th century; a 1969 Harley motorbike.

A 1911 first-edition novel of 'Peter Pan'; a piece of scrap metal from an infamous fallen airship; an ancient kneeling Thepanom statue; a 'Casablanca' movie poster.

Rick flies to Washington, D.C., to see one of the first Jeeps built for use in WWII; a magic lantern image projector from the early 20th century; a fortune-telling gambling machine.

A prop from 'Back to the Future, Part II'; a chemical company calendar from 1900; a British Navy gunpowder bucket; a belt owned by country music legend Merle Haggard takes things up a notch.

A seller drums up excitement for his Led Zeppelin vinyl albums; an elaborate 19th-century office desk makes a formidable piece of furniture; a baseball base used in the 2016 World Series.

A 1984 Ferrari 308; a phone-operated music player from the 1930s; a cowboy hat that belonged to actor Larry Hagman ('Dallas'); a hockey jersey signed by goalie Marc-André Fleury, who visits the shop to authenticate his signature.