Celluloid was mainly used in the movie industry decades ago. Since it's highly flammable, complicated and expensive to produce and no longer widely-used, it's very rare to find artworks made with celluloid. One piece of celluloid can only be used 3 times at most. The production of an animated film uses about 150,000 pieces of celluloid. Most of Disney's celluloid medium artworks have been destroyed, the rest are so precious.