A baggy green cap worn by Australian cricket captain Don Bradman in 1948 is expected to be sold in the next 24 hours after failing to sell at auction in Melbourne on Monday night.
It was worn by the Don when he captained the 1948 Invincibles Ashes tour of England and was expected to fetch more than $A600,000.
Auctioneer Charles Leski told the ABC an offer had been made and he expected it to be sold in the next 24 hours. He did not say how much the offer was for.
Mr Leski says there has been worldwide interest in the cap, which Sir Don gave to the son of an English friend whom he saw playing backyard cricket with a makeshift cap.
He said Richard Robins Jr owned the hat until 2003 and it has been on show in several museums in Australia since then.
Australia were undefeated on the 1948 tour. Bradman scored two centuries, and a duck in his final innings, leaving him with a Test average of 99.94 - four runs short of an average of 100.