Have you heard about Twin Famicom? I know Nintendo released their Famicom in Japan before brought in the United States as NES. But this is the first time never heard about Twin Famicom.
Twin Famicom was produced by Sharp Corporation in 1986 licensed by Nintendo. It combined the Famicom console and Family Disk System into one device. The The Twin Famicom was only released in Japan. There are two versions released by Sharp and each version can be differentiate from its casing design
Unboxing Twin Famicom:
Custom Twin Famicom made by zoki64 and it looks awesome: