Worlds Most Difficult Jigsaw Puzzle Butterflies 2004 Double-Sided Sealed Vintage

World’s Most Difficult Jigsaw Puzzle Butterflies 2004 Double-Sided Factory Sealed 529 Super Thick Pieces 15” X 15” Description: Vintage 2004 “World’s Most Difficult” Jigsaw Puzzle – Butterflies edition by BGI Puzzles. New and factory sealed. This original double-sided puzzle features the same butterfly artwork on both sides, rotated 90 degrees to increase difficulty. Contains 529 super thick pieces. Finished size is 15” x 15”. Made in the USA by Buffalo Games. Puzzle art by Bogdan J. Fundalinski. Box has storage wear and one corner has slight crushing. Still Factory sealed never opened - Please see photos for condition. Tags: jigsaw puzzle, butterfly puzzle, hard puzzle, BGI puzzles, vintage puzzle, 2004 puzzle, sealed puzzle, buffalo games, adult puzzle, brain teaser, collector puzzle, novelty gift, extreme challenge, double-sided puzzle, rare puzzle