A carved block of wood used as a doorstop in a Hertfordshire cottage for more than 40 years is expected to fetch around £100,000 when it is auctioned this afternoon.
The carving's owners were surprised to discover that it is, in fact, a rare Chinese pot from the 18th or 19th century.
Originally it would have been used to store calligraphers' brushes.
The auction is due to take place at Stansted Mountfitchet in Essex this afternoon.
More top news
The Suffolk PCC has called for tighter EU border controls after a convicted paedophile banned from the UK was jailed for the second time
Pupils at a school in Norwich have been cooking their own home grown produce after turning parts of the playground into a garden
Exhibition tells the story of Sir Ernest Shackleton's mission to "bring every man home"