The purple hat, crafted by Fortnum and Mason’s in-house milliner Adrian Philip Howard can be bid on until 18 December.
The auction began back in October to mark World Stroke Day, which is why the hat is purple – The Stroke Association’s colours.
Each bid costs £1 and you can bid as high as you want to win it.
All proceeds will be donated to The Stroke Association.
Mr Howard said: “I was delighted to support World Stroke Day for Oxleas by making this exclusive hat for auction.”
He is the brother of Fenelly Dowsett, who works in the hospital’s Meadow View ward as the activity co-ordinator. She has worked with our Speech and Language Service to host the fund-raiser.
To make your bid, get in touch with Fenelly Dowsett via email or phone: firstname.lastname@example.org / 0208 308 5423.
If the winner of the hat needs adjustments to be made, they can visit Adrian at Fortnum and Mason to have them done.