CALABASAS, Calif. — The offices of Joe Maddalena’s Profiles in History look like the inside of a film buff’s mind. Stacked and scattered in every corner are hundreds of props and speciality items from movies and TV shows.

There’s the sword and shield from the original “Clash of the Titans,” a pair of self-lacing Nikes Marty McFly wore in “Back to the Future,” Superman’s suit from “Superman Returns,” the computer used to type cryptic numbers on “Lost” and even a small Santa and his sleigh decoration from “Miracle on 34th Street.”

“Everybody knows about baseball cards and comic books and other collectibles. But, this is the next big collectible area,” says Maddalena during a break from shooting an episode of his new Syfy cable channel series “Hollywood Treasures.”

The series follows Maddalena and his team — Brian Chanes, Jon Mankuta and Tracey McCall — as they bring together rare Hollywood collectibles for the company’s auctions.

In the series opener, the team tracks down carpet bags from “Mary Poppins.” The episode that follows has Maddalena trying to convince the owner of the witches’ hat Margaret Hamilton wore in “The Wizard of Oz” that it’s time to sell the iconic prop.

“You don’t see it in the show but I spent all day with her. Half the time she was crying. She bought the hat at auction as an investment and it was time to sell it. But she had become so connected to it that it was a hard decision,” Maddalena says.

He says it’s that kind of close connection that makes this type of collecting so interesting. The treasure hunter has found that about 95 percent of those who buy the Hollywood collectibles have a sentimental connection, mostly fond memories associated with seeing a movie or TV show.

Maddalena’s desk is surrounded with such items. There’s an autographed photo of Mickey Mantle on his wall. He and his father met the Yankee great years ago. There’s a Twiki costume from the TV series “Buck Rogers in the 25th Century,” which reminds Maddalena of how warmly actor Felix Silla treated his son when they met.

The passion for collecting started when Maddalena was young. He organized his first baseball card show when he was 12 and by 14 had more than one million baseball cards, thousands of autographs and more than 100,000 comic books and original pieces of art.

The son of two antique dealers, he would travel to shows and swap meets every weekend to help his parents set up their booth.

“I would then have eight hours to kill. So I would wander around and maybe spend the entire day with the comic book guy,” Maddalena says.

His interests changed to historical documents and books when he moved to California in 1980. He held his first auction of Hollywood items in 1995.

Many of the items he sells come from the studios or actors. The company is holding a special charity auction Nov. 6 that includes items from “Back to the Future,” which were donated by the film’s writer/producer Bob Gale. If you have always wanted to own your own “time traveling” DeLorean, the estimated cost is $80,000 to $120,000.

A list of auction items is at profilesinhistory.com.

Should the new cable TV show spark an interest in collecting Hollywood treasures, Maddalena has one warning.

“Collect what you like,” he says. “Don’t just buy it for an investment.”

‘Hollywood Treasures’

When: 10 tonight

Where: Syfy