The cels, from the 1937 release Snow White and the Seven Dwarves, were brought along to a valuation day in Leicestershire.
One image depicts the moment the Wicked Queen hands Snow White the poisoned apple.
Auctioneer Charles Hanson said that one alone sold for £10,500.
The other, depicting Snow White with animals, was sold for £5,600 when it went under the hammer in Etwall, Derbyshire.
Mr Hanson said the cels were sold on the internet to the same buyer.
"We had bids from all over the world: America, Italy... the theatre and drama in the saleroom felt like a magical movie moment," he said.
Snow White was released in 1937 and was briefly the highest grossing film of all time, before being overtaken by Gone with the Wind.
Source: IMDB
It is believed the images were first sold in 1938 at an exhibition in London of the original paintings for Snow White and the Seven Dwarves.
Charles Hanson, from Hansons Auctioneers and Valuers, said: "Snow White and the Seven Dwarves by Walt Disney is a film that has provided so much joy to so many people over the generations.
"Such familiar and famous characters are right here at the very beginning of this success.
"Of all the scenes that could be captured on a cel the famous poisoned apple takes some beating - it's the very heartbeat of the film."

The injured girl was riding the the Hogwarts Express train with her family, who were on holiday from Tennessee visiting Universal Studios in Orlando.
Police described the explosion as a "fireball", burning the girl's face.
"It was just a weird, freak accident," Lieutenant Dan Brady told the Orlando Sentinel.
"It wasn't a big explosion but was definitely enough to scare everyone who was in that cab of the train," he added.
Her name has not been released.
The girl was riding the train, which connects Universal Studios with the Island of Adventure theme park, at about 15:30 local time (19:30 GMT) on Saturday when the device exploded.
The girl suffered mild burns to her face, arm, and leg, and was taken to hospital.
The vapouriser was inside another man's pocket when it malfunctioned, causing minor burns to his leg.
The explosion burned a hole in a seat, but otherwise there was no significant damage to the train, officials say.
Universal Studios shut down the ride temporarily to allow detectives to investigate.
The Wizarding World of Harry Potter opened at Universal Studios in 2010.

Meden Sports Centre in Warsop, Nottinghamshire, has faced ongoing maintenance issues with a temporary closures and Â£500,000 spent on repairs.
Mansfield District Council has said it is "unsustainable" and has launched a consultation on its future.
However, Warsop Parish Council said it was "essential" to the area and it would fight to keep it open.
The centre, which dates from the 1960s, was closed for six months in 2014 after an inspection identified fire safety concerns.
Officials have said renovation or rebuilding costs could cost between Â£1m to Â£8m.
Andrew Tristram, district council portfolio holder for the environment, said: "The council has undergone a review of leisure services at Meden Sports Centre and concluded that the current operating model is not sustainable for the future.
"There are increasing uncertainties about the running costs and capital investment due to the condition of the building".
However, parish council chairman Andy Wetton said: "The centre is essential to the area but this administration seems hell-bent on closing it.
"There was money available to replace it but this has been spent on other things.
"Any attempt to close it would be a declaration of war on Warsop and we would fight it hard."
The district council said no changes would be made before April 2018.
A pair of original pieces of cine reel from Walt Disney's first animated feature-length film has sold for more than £16,000 at auction.
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