The OBE awarded to comedian Frankie Howerd will be raffled to raise money for various charities.
Frankie Howerd was best known for Up Pompeii!
The star, who died in 1992, left the award to his manager Dennis Heymer.
Tickets for the raffle will be sold at Howerd's former country home, Wavering Down, in Cross, Somerset, which will be open to the public over summer.
Chris O'Byrne, Mr Heymer's adopted son, said: "He would be over the moon to know that it can still do some good for others."
He added: "We don't know how much the award will bring but we hope we do the best we can.
The money raised will be used to help a number of local projects including the Burnham-on-Sea lifeboat, brain injury charity Headway and St Gregory's Church, Weare.
The house and gardens will be open on April 19, the anniversary of the comic's death, and various weekends through the summer.
The raffle will be drawn on the final day the house is open, 18 September.
The Carry On star was awarded the OBE in 1977.