Heye Osterle Submarine Fun 1500 pc Jigsaw Puzzle Triangle Box 2019 Underwater | eBay
The Heye puzzle I scored for $2 - complete with all pieces. Good quality but for some reason I didn't enjoy putting it together. Too many small details (Goldilocks again!) made it
Amazon.com: Heye 29840" Library, Oesterle Triangular Puzzles : Toys & Games