5000 piece color spectrum puzzle. 2.5 month finish time : r/Jigsawpuzzles
It's longer than I am tall! (5000 Colours, Clemens Habicht, Lamington Drive Editions) : r/Jigsawpuzzles
Amazon.com: Puzzle Wooden Jigsaw Fantasy Starry Ocean 4000/5000/6000 Pieces Adults Super Difficult Toys Game Gift 0312 (Color : 6000 Pieces) : Toys & Games
This Puzzle Has All Colors In CMYK Spectrum | Bored Panda
The puzzle with 5000 pieces, each of a different colour | Collater.al