An expert has lifted the lid on some of the show's best-kept secrets following a "hostile" dispute with TV bosses. The antiques weekend show is loved up and down the country and quickly became a mainstay following its debut in 1979. The show has since spawned several versions of the show across the globe, including America and Australia.
Back in 2012, US auctioneer Gary Sohmers found himself in a heated clash with show producers across the pond following the restrictions the programme places on appraisers. The star is known for his signature ponytail and Hawaiin shirts, and tirelessly promotes his expertise and his business online.
But it hasn't always been plain sailing for the auctioneer. Speaking to , Kenneth Corbin recalled an alleged incident in which Roadshow producer Marsha Bemko confronted Gary for appearing on a radio show in Miami.
Following the report, Sohmer shared a letter he received from the TV channel WGBH's corporate counsel Eric Brass. It read:" WGBH is revising its practice for the Antiques Roadshow website so that the contact information of past appraisers will be generally available."
In a reply, Sohmers wrote that the letter from Brass failed to address "90 percent of the issues". The expert revealed that independent appraisers pay their own way to visit various cities for a chance to appear on the long-running show.
He added: "The question remains... will I be invited to appear as an appraiser this season in an environment that is not hostile to me?" But this isn't the only scandal the US programme has suffered over the years.
Back in 2016, viewers across the pond watched on as guest Alvin Barr brought in a jug to the long-running show which was filmed in the heart of Spokane, Washington. The appraiser then proceeded to analyse the striking piece of artwork, which he described as a "grotesque face jug."
The guest, who hails from South Carolina, revealed that he purchased the item for $300 (£231) after it caught his eye at a sale in Oregon. As Stephen looked over the piece, he revealed that the jug could have been inspired by one of the most infamous artists of the 19th century.
He told him: "It's bizarre and wonderful. You even see a little bit of, like, Pablo Picasso going on here. It's a little difficult to identify precisely when this was made, but I think it's probably late 19th or early 20th century".
Although Stephen explained that it was "a little difficult" to estimate the value, he put the sculpture's work at between $30,000 - $50,000 (£23,100 - £38,500). His estimation left Alvin stunned, and admitted that he felt he had originally paid too much for it.
But things soon took an unexpected turn when the episode hit the airwaves later that year. Despite the impressive valuation, it later emerged that the antiques expert had got it very wrong. A woman who was watching the show recognised the "grotesque face jug" as a sculpture made by her friend, Betsy Soule, back in the 1970s.
The US broadcaster PBS has since updated the details on the American Antiques Roadshow site and revalued the item between $3,000 and $5,000 (£2,300 and £3,850).