Sony Hit Bit HB-75 MSX1 Home Computer + Authentic Hudson Soft / Honeybee Soft “JONG KYO” (Mahjong) Cartridge

Tested & Fully Working – Vintage Japanese Retro Collectible

Up for sale is a genuine Sony Hit Bit HB-75 MSX home computer (white/beige version) complete with the matching used cartridge shown in the photos.

Key Specs:

• MSX1 standard (1984–1985 Japanese market model)
• Zilog Z80A CPU @ 3.58 MHz
• 64 KB RAM
• Built-in MSX BASIC 1.0 + Personal Databank software (schedule/memo/address book)
• One cartridge slot
• TV / Video / Audio outputs + full expansion ports on rear (printer, data recorder, FDD, controllers, etc.)
• Japanese keyboard layout with kana characters and function keys

Condition (described honestly based on the photos you provided):

• Fully working and tested – Powers on , boots to the SONY HIT BIT menu screen (as shown in the full setup photo), reads the cartridge instantly, and responds to keyboard input. Everything functions as it should.
• Case damage from shipping – Unfortunately, while being brought from Japan years ago, the plastic case was damaged. The most noticeable area is on the bottom/side (clearly visible in the underside and rear close-up photos): a large section of the beige casing is broken/missing, exposing internal wiring and board. It has been secured with aluminum tape for stability. (see all angles in photos).
• top case Keyboard – Excellent! Very clean, no yellowing, no sticky or missing keys, all legends sharp and responsive.
• Cartridge – Used Hudson Soft / Honeybee Soft “JONG KYO” (Japanese Mahjong game), model MXHI 11033. Label is intact, inserts and works perfectly with the machine.
• Monitor NOT included – The Sony monitor shown in one photo is part of my private collection and is NOT for sale. It was only used for testing and demonstration.

What’s Included:

• Sony Hit Bit HB-75 main unit
• Hudson Soft JONG KYO Mahjong cartridge

This is a rare opportunity to own a classic Japanese MSX system with a fun period cartridge. Perfect for retro computing collectors, MSX enthusiasts, or anyone who loves 8-bit gaming history. Sold as-is due to the documented case damage – no returns. Please review all photos carefully – they form part of the description.

Feel free to message me with any questions before offerding!

Shipping: Carefully packed with bubble wrap and foam to protect the remaining case. International buyers welcome – contact me for quote.

Thanks for looking!