About Animation Cels
Generally, the characters are drawn on cels and laid over a static background drawing. This reduces the number of times an image has to be redrawn and enables studios to split up the production process to different specialised teams. Using this assembly line way to animate has made it possible to produce films much more cost-effectively. The invention of the technique is generally attributed to Earl Hurd, who patented the process in 1914.
The outline of the images are drawn on the back of the cel. The colors are also painted on the back to eliminate brushstrokes. Traditionally, the outlines were hand-inked but now they are almost exclusively xerographed on. Another important breakthrough in cel animation was the development of the APT (Animation Photo Transfer) process, first seen in The Black Cauldron. Disney later stopped using cels in 1990 when CAPS replaced this element in the animation process.
Actual production cels are sometimes sold after the animation process is complete. More popular shows and movies may demand higher prices for the cels, with some selling for thousands of dollars. Some cels are not used for actual production work, but may be a "special" or "limited edition" version of the artwork, sometimes even printed ("lithographed") instead of hand-painted. These normally do not fetch as high a price as original "under-the-camera" cels, which are true collector's items. Some cels have fetched record prices at art auctions, e.g. a cel depicting numerous characters from the finale of Who Framed Roger Rabbit sold for $50,600 at Sotheby's in 1989.

Beatles Cartoons CEL "Color Model Proof" *Signed* RARE
Buy It Now Price: $26,995.50
Sale Ends: 21d 9h 9m |
|
1937 Dopey Production cel W Production Background
Buy It Now Price: $23,999.00
Sale Ends: 4d 3h 36m |
|
Production Cel Signed by Hanna And Barbera
Buy It Now Price: $19,500.00
Sale Ends: 22d 7h 8m |
|
1953 JOHANN MOUSE TOM & JERRY ORIGINAL CEL & BG FRAMED
Buy It Now Price: $8,250.00
Sale Ends: 3d 4h 34m |
|
Pinocchio production Cel 1940, "I've Got No Strings"
Buy It Now Price: $7,499.99
Sale Ends: 15d 5h 52m |
|
Disney Aladdin Cel of the Genie "One-of-One"
Price: $7,495.00 (0 Bids)Sale Ends: 4d 4h 26m
|
|
1942 Warner Brothers Original Animation Production Cel
Buy It Now Price: $6,500.00
Sale Ends: 13d 15h 30m |
|
Courvoisier "Doc" production cel from "Snow White"
Price: $5,500.00 (0 Bids)Sale Ends: 4d 5h 51m
|
|
Anime Hanken Cel Kimagure Orange Road
Buy It Now Price: $4,999.99
Sale Ends: 18d 7h 21m |
|
Peanuts CEL "Quiet on the Set" Charlie Brown VERY RARE
Buy It Now Price: $4,939.35
Sale Ends: 21d 10h 55m |
