These are made to order and fresh off the engraver! They may have a scorch/burn scent to them initially but will fade overtime as exposed to air! Each case contains 1 of each dinosaur puzzle in the product picture! Have fun piecing these bag of bones together! Each puzzle is made from 1/8" birch, once completed Tyrannosaurus Rex is ~10" in height by ~12" length, Pterodactyl is ~4" in height by ~10" in length.