Dowling and the team investigate the authenticity of a 1908 Honus Wagner baseball card.

Source: CNBC

Dowling and the team investigate the authenticity of a 1908 Honus Wagner baseball card.

Source: CNBC

A former tech executive asks the team to prove that a possible Stradivarius violin is the real thing before he purchases it for $12 million. Also: an antiques dealer believes he purchased an authentic Warhol for $100 bucks; if it's authentic he stands to make $25,000 on the deal.

Source: CNBC

The team is asked to authenticate a guitar said to have been one of Les Paul's favorites as well as a cape said to have been worn by James Brown on stage in 1979, both of which are being auctioned off as part of Dick Clark's estate.

Source: CNBC

Cuff links and a tie pin that may have traveled to the moon with astronaut Neil Armstrong; a collection of the 19th-century LDS newspaper Times and Seasons.

Source: CNBC

The team works to authenticate a 19th-century table said to have been owned by Abraham and Mary Lincoln; and a rare 15th-century Queen Elizabeth portrait.

Source: CNBC

A prototype of the first hockey mask worn in a pro hockey game; a 40-foot mural purchased at a flea market that may have been shown at the 1939 World's Fair.

Source: CNBC

A possible de Kooning painting bought at a garage sale; a dagger that may date from the Han Dynasty in ancient China.

Source: CNBC