The mock-up, in the window of Bracknell Shopmobility, led the charity to success and a £100 cheque in a contest organised by Bracknell Town Council to mark the Queen's Diamond Jubilee and the London Olympics and Paralympics.
The council gave £100 towards a charity of the winner's choice in both the best-dressed shop window category and one for the best-dressed market stall categories, which was won by Sew Devine.
There was also £50 each for the runner-up in both contests.
Becky Pearce, manager of Bracknell Shopmobility in Crossway, said on the shop's win: "It's lovely. It was fun taking part!
"I think it's good to have the competition because it just shows we are proud of our town and we try to take part to boost morale and
enjoy the festivities for the forthcoming Olympics."
The charity will put the £100 towards its service - lending out mobility scooters and other aids to help people get around the town centre.
Ian Devine from Sew Devine, which decorated its stall with flags and bunting, said: "I'm very pleased and just appreciate the market being included in this as part of the town." Mr Devine said their £100 cheque would go to the Royal Berkshire Bracknell Clinic, which is at Brants Bridge in east Bracknell and provides NHS treatments including cancer and renal care.
He said: "It's local and quite a few of the family have had cancer so it's close to our hearts."
The runner-up in the shop category was Norman Prince and Partners eyecare in Town Square, which gave its prize money to children's charity Sebastian's Action Trust. Runner-up of the stall category was Lady Sew and Sew, which donated its cheque to Bishopswood Special School in Sonning Common.
Cllr Alvin Finch, deputy town mayor of Bracknell, was one of three councillors involved in judging the entries and presented the awards at a ceremony by the bandstand in Charles Square on Friday.
He said: "It was very, very hard to choose between them really.
"It's nice to bring the whole town together."