Non-US machines

Just acquired a Memotech MTX-512 computer in almost mint condition including the original box, packaging, and manual. The only thing it seems to be missing is one cassette tape that was included as some type of demo or sample software. I was kind of curious how common this machine might be here in the US. Aside from the Sinclair, I haven't seen many machines here that were manufactured in other countries (excluding of course the US manufacturers who had their machines made overseas.) This one came from a member of the Santa Barbara PC Users Group who offered it to Stephen Stone, who accepted it in my behalf which of course I gratefully accepted! A second machine I have is a Mac8 machine that came from Japan. It was given to me in kit form by the company owner while I was in Japan about 1981. I did a web search on Alta Vista and wasn't able to come up with any matches. Does anyone else have one of these and any idea how common or uncommon they might be? It is an S-100 machine with a front panal with lights and switches ala Altair or Imsai, uses either an 8080 or Z80 (can't remember which), has a 4K memory board and an SIO board. I will have a picture up in a few more minutes at http://www.rain.org/~marvin/mac8.jpg.