Original - Jade Bone Specimen - Emperor Penguin - S Size (Yoshimoto Art Factory)

The Jade Bone Specimen Emperor Penguin in S Size is an original collectible produced by Yoshimoto Art Factory, offered under their THUNDER MALL label. This piece belongs to the Tamabone (ball bone) specimen line, which features creatures with transparent bodies revealing their skeletal structure inside. The emperor penguin specimen was showcased at Wonder Festival 2023 Summer alongside a domestic cat version, marking the first terrestrial ball bone specimens in the lineup. The Tamabone specimen series presents a unique fusion of scientific curiosity and artistic craftsmanship. Each specimen features a transparent body through which the bone structure is visible, creating a striking visual effect. The emperor penguin, the largest living penguin species, has long fascinated researchers — fossil records show that ancient penguins like Kumimanu biceae stood well above modern emperor penguins, with gigantism evolving early in penguin history before larger species died out roughly 20 million years ago. The S Size version was priced at 7,000 yen and is sold in an unpolished state, allowing collectors to polish the surface themselves to achieve a smooth, transparent finish. The lower portion of the piece is lined with marine life details, adding further depth to the display.