It's also precious. "If the mixing bowl gets broken it cannot be replaced," she said.
Ms Douglas said she has two daughters and three grandchildren, and her oldest daughter Coralie was upset she did not inherit it instead - she hopes it will get passed down to one of the grandchildren.
She said she learned about the Mr Rental competition while cruising Facebook.
"I never expected to win of course," she said.
More than 300 entries were received from around New Zealand and Australia.
A chuffed Ms Douglas, who won $1000 worth of travel vouchers, now has a huge dilemma, deciding whether to fly to Brisbane to visit her partner's family or visit the South Island for the first time.
Mr Rental marketing and product manager Grant Peck said Mr Rental had been privileged to speak to the contestants and hear their stories about treasured family heirlooms, reliable household goods and pieces they couldn't bear to part with.
"More and more people are developing a taste for products in the style of years past, but for many of us such products still play a prominent role in our households," he said.
Some of the other entries included:
• Vintage gaming consoles
• 1950s computers
• Antique radios
• A range of other cooking appliances
• A number of old fridges
For more information about Mr Rental in NZ, visit www.mrrental.co.nz