"He already has a head start from Kubus – a boy who didn't make it in time but whose amazing parents decided to pass on the funds they collected.
"And in this way, I also want to help. It's for him that I am auctioning my Olympic silver medal."
It led to another medal ceremony of sorts for Andrejczyk. A chain store won the auction and told her she could keep the medal.
"We were moved by the beautiful and extremely noble gesture of our Olympian," a spokesperson said.
The Times reported her compatriot Piotr Malachowksi sold his discus silver medal from Rio to cover a boy's eye cancer surgery.
Ukrainian boxing great Wladimir Klitschko raised $1m for children's charities in 2012 by selling his 1996 Atlanta gold medal, which he won by beating Tonga's Paea Wolfgramm in the superheavyweight final. The buyer, a philanthropist, also gave Klitschko his medal back.