https://www.ebay.nl/itm/254527902156?ul_noapp=true
It also includes paperware. It looks like this is in fact an axe built in 1988, some of the very first Heartfield instruments, pre-dating the regular EX guitars (or any others for that matter!). And it looks official. The auction calls it a EX DX. There's a Japanese leaflet as well. Maybe someone who speaks Japanese can determine what it says?
