The Sord M5 8-bit micro was manufactured in Japan and released back in 1982. Despite having the support of Namco and Konami it was only moderately successful and hence quite rare these days. You can find more about it here and here.
Interestingly an essentially new, boxed Sord M5 has surfaced on eBay. The original package on offer contains the computer, the power supply, the BASIC cartridge, a Baseball game tape, the User's Guide and all the required cables. Seller ships worldwide.