One guest on BBC's Antiques Roadshow left the show no doubt feeling a little deflated, after learning a portrait thought to be a Lely painting was basically worthless.
The visitor appeared on the show with one of the experts, to find out the true value of the artifact that had been passed on in his family.
He revealed how it was bought at auction in the 1850s, before being placed in the home of the current owner - having been passed down through the family.
It was thought to be painted by the popular artist Sir Peter Lely, who was around in the 1600's.
But on inspection, the visitor soon learned that it was not an original and most likely a copy painted in the 19th century - two centuries after Lely's paintings.
It featured all the parts of a painting by this artist, even documented as one of his works in an auction catalogue from the time it was purchased.
But the show expert was quick to point out some of the details that made it obvious it wasn't an original.
Not only that, but he dropped the bombshell that if it had been an original it would be worth around a million pounds - while the one on display on the show was worth much, much less.
He explained: "The question is, is it by Lely? The catalogue of 1845 you've just shown me says Lely doesn't it, quite clearly. But in those days they had somewhat a looser interpretation of the trade description act, if it indeed ever existed.
"The thing about Lely, the great portrait painter that he was, is that when he died he left hundreds of unfinished portraits and versions of portraits already done.
"His students and studio assistants finished them really quickly, and sold them all so that his entire estate including his collection of old masters made something like £30,00 in the 17th century, which was a massive amount of money. He was so popular.
"It effectively flooded the market with versions of his pictures done by lesser hands, the question is, is it one of those?"
The expert then delivered the "blow", revealing what he could have had and what his portrait was really worth.
He went on: "The secret here is not to look too closely I’m afraid, you can tell I’m softening you up for a bit of a blow.
"Sorry but I think, I’m afraid, this is a shadow of a dream. It's not even by a studio assistant. I think it's a much later copy.
"Something about the reduced scale, of course it should be massive, makes it look more domestic. Something about the frankly Victorian idea of a 17th century frame, it's been copied.
"And the colours are slightly gaudier than you’d expect, a little bit of clunkiness in the drawing of the hand, and then put on top of that this brown finish which is quite deliberately antiquing it, I think what we're looking at is a 19th century copy."
The expert concluded as the guest looked pretty gutted about it: "I’m sorry to say it might even have been new when it was in this catalogue. So if it was an original Lely, it would be pretty well around a million pounds.
"But as it is, it's probably worth around I don't know, £600. I'm sorry to let you down."
The owner took it in his stride, and thanked the expert telling him it was "alright", as viewers watching at home shared their reactions to the moment on Twitter.
Antiques Roadshow airs Sunday evenings on BBC One.
