Tsukuda Original was a video game development company based in Japan as well as a toy/games manufacturer.
Tsukuda Original are notable for a number of reasons. During the 1970s the company registered the board game, Reversi, under the name "Othello" (supposedly named after the Shakespearean play). They introduced the green, black and white colour scheme and created the modern rules used in the game today. Its success led to a number of video game interpretations, some of whom were programmed by Tsukuda Original themselves.
In 1983 Tsukuda Original struck a deal with Sega to produce an SG-1000 clone, the Othello Multivision. It was one of Sega's attempts to try and establish a video game/computer standard, encouraging companies to make compatible systems (though this concept not be fully realised until Microsoft of Japan debuted the MSX). The Othello Multivision, as the name suggests, came built with an SG-1000 interpretation of Othello built-in. There were two models of the console and a number of own-brand SG-1000 games developed by the company.
By 1985 Tsukuda Original's Othello Multivision dream seemed over, though the company continued to produce games primarily for Nintendo systems until 1995 (and would continue to license out the Othello board game to video game developers in the years that followed, such as to Success for the 1998 Sega Titan Video game Othello Shiyouyo).
What's it worth? Take a look at this Tsukuda price guide: sold listings for a value indication.