A black-and-white portable television set bought in 1974 is Penrith's oldest working appliance.
Radio Rentals ran the competition for Penrith residents to celebrate its 75th birthday,.
Nola Carpenter from South Penrith won a new television after she entered her 12-inch portable Healing, still with the manual and receipt.
It is the oldest working television set Radio Rentals has found in Australia so far.
Mrs Carpenter entered the competition after seeing an article in the Star.
Her husband Albert went under the house to disconnect the television and bring it in for this week's photo shoot.
"My daughter says I'm the only one who keep receipts this long," Mrs Carpenter said. "Most people would have thrown them out years ago. But I keep everything until it doesn't work.
"I couldn't believe I won. I thought there would have been something older out there."
The set was initially used as a spare in the dining room and has become handy on caravan holidays.
The Carpenters will hang onto their old television and the new one will go in the family room.
"The three grandkids will use it more than us," Mrs Carpenter said.
Pictured: Nola Carpenter and grandson Jayden Parker, 3, with the $159.95 portable bought from Norman Ross in 1974.
Picture: Gary Warrick