A 600-year-old medieval hand cannon, which was bought for a few pounds at a Hertfordshire flea market, has sold for thousands at auction.

The cannon was originally used in a garden rockery, and was then assessed by Hanson Ross Auction Firm in Woburn, which has a sister salesoom in Royston.

Owner Charles Hanson said: "When we came to assess it properly we were amazed. It’s a heavy, triple-ring cast cannon.

"This type of weapon was seen in late medieval Europe around 1400-1450.


"Perhaps it was used by a knight in shining armour. In more than 20 years in the antiques business I have never seen one like it."

After an intense bidding battle, the cannon sold for £2,600 to an international buyer.