Only Complete Mighty Joe Young Puppet Known to Survive Could Sell For Millions in Propstore Auction

The only complete stop-motion animation puppet known to survive from the 1949 film Mighty Joe Young is heading to auction with an estimate of $1 million to $3 million.

The 15-inch production model will make its public auction debut during Propstore’s Summer Entertainment Memorabilia Live Auction, taking place August 26 through August 29 in Los Angeles.

The puppet retains most of its original latex skin, fur covering and internal articulated armature. A recent X-ray examination confirmed that its original mechanical skeleton also remains intact. Propstore described it as one of the most historically significant visual effects artifacts ever offered publicly.

The puppet was constructed by model maker Marcel Delgado under the direction of visual effects pioneer Willis O’Brien. Both worked on the stop-motion effects that helped Mighty Joe Young win the Academy Award for Best Special Effects.

The film also brought O’Brien together with his protégé Ray Harryhausen, who later became one of the most influential stop-motion artists in movie history.

According to Propstore, original stop-motion puppets from this period are particularly rare because they were functioning production tools that were repeatedly handled and manipulated during filming. Few survived with their original exterior materials and internal mechanisms still together. The Mighty Joe Young puppet has had only three known owners.

Its ownership history begins with the film’s co-producer and co-director Ernest B. Schoedsack. It later entered the collection of visual effects artist and puppeteer Lyle Conway, where it remained for approximately 50 years before being offered publicly.

“As the only complete Mighty Joe Young puppet known to exist, with its original skin, fur, armature and documented provenance, this is one of the most significant stop-motion artifacts ever to come to public auction,” Propstore Chief Operating Officer Brandon Alinger said.

The puppet will be one of the headline lots in Propstore’s four-day sale, which includes more than 1,700 original props, costumes, production materials, autographs and other entertainment memorabilia.

The entire auction carries a combined presale estimate of $10 million. The first day of the sale will begin at 9:30 a.m. Pacific on August 26 and will include in-person bidding at the Petersen Automotive Museum in Los Angeles. Online, telephone and absentee bidding will also be available.

The remaining three days will begin at 9 a.m. Pacific and will be conducted through online, telephone and absentee bidding.