I have a few vintage 8-bit systems from the 80s that were built in Japan for sale.
National CF-2000 MSX Computer
(aka Panasonic, Very clean inside)
Toshiba Pasopia 7 Computer
(Was extremely hard to get a hold of)
NEC PC-6001 Computer (akak NEC Trel in America)
Like the Aussie VZ line, aka Z80 plus Motorola 6847 (ala Color Computer)
Epson PC286C - PC Club
(286 machine dubbed as 'Amiga killer' ;) )
Should also mention I have some old 80s Japanese manuals as well.
NEC PC-8001 N-BASIC Programming Manual & Reference Book
101 TRS-80 Color Computer Programming Tips and Tricks (Radio Shack CoCo)
Epson PC286 Disk BASIC User Manual (PC Club, NEC PC98, Japanese)
Last but not least, I have LOTs of MSX computer platform games from the 80s.