Rare antique Chinese cups brought into the Tulsa stop of "Antiques Roadshow" on Saturday became the most valuable discovery in the PBS television show's 16-year history.

Appraisers gave the collection of five Chinese carved rhinoceros horn cups, dating from the late 17th century or early 18th century, an estimated value of $1 million to $1.5 million.

Another guest showed up with a F-5 Gibson mandolin, which was valued at $175,000, and had been bought for $200 during the Great Depression.

Three Tulsa episodes will air in early 2012.

Previous 'Roadshow' records include a $1.07 million collection of Chinese jade appraised in 2009 in Raleigh, NC, where a $450,000 Andrew Wyeth watercolor was also discovered.

An Alexander Calder mobile found in Miami, Fla., last year was estimated at $400,000 to $1 million.