Rayner told CNN that he was glad to be rid of the phone, which Hitler used during his travels during the war.
"It's a fairly sinister bit of kit and I've always lived in fear of someone trying to steal it," Rayner told the news network. "I've also been told it'll bring me bad luck."
Rayner’s father, Brigadier Sir Ralph Rayner, was a signals officer under Field Marshal Bernard Montgomery on May 5, 1945, the day after the German surrender. According to the auction house, Montgomery ordered Rayner to go to what remained of Berlin and establish contact with Russian officers there.
He was likely the first non-Soviet soldier to enter Hitler’s bunker, where the Nazi leader had taken his own life, the auction house said. When Rayner arrived, the Russian soldiers gave him a tour of Hitler’s private quarters, which he shared with girlfriend, Eva Braun.
Rayner was first offered Braun's black telephone, but he "politely declined, claiming that his favorite color was red," the auction house wrote in the catalog. The Russian officers gave him the red phone that was found next to Hitler's bed.
The British soldier smuggled the telephone and a porcelain figurine of an Alsatian out of Germany in a suitcase and brought both back to his home in western England. The dog figurine was found on Hitler’s desk.
The auction house said the figurine was created by prisoner labor at Allach, the largest subcamp of the Dachau concentration camp. According to the Dachau Concentration Camp Memorial Site, more than 41,000 people were killed at Dachau.
The dog figurine, also offered at auction this weekend, sold for $24,300, CNN reported.
Ranulf Rayner said he hoped the items would ultimately find a home in a museum.
"I don't want them to be hidden again," Rayner told CNN. "I want them to remind the world of the horrors of war."