Transformers Generation 1

Hasbro's original 1984-1991 Transformers line — rebranded from Japanese Diaclone and Micro Change toys — built a billion-dollar franchise. The most valuable G1 figure is a sealed Optimus Prime, which sells for $2,000-$10,000 depending on box condition. Pre-rub (pre-1985) figures with the "no indent" head variant are especially prized. The Fortress Maximus — at 22 inches, the largest G1 toy — commands $3,000-$8,000 boxed. Even common figures like Jazz and Sideswipe fetch $200-400 mint-in-box.