Mine's an AN-S.
From what I'm aware, Matchmaker bought and retrofitted various different machines. Shizuoka's were just one of various machines they sold. I'm aware they also done some Bridgeports.
My own mill had also been upgraded to a Heidenhain servo system by another company in the NW,

Shizuoka still exist, and you can still buy a new mill that is pretty much still the same basic machine - http://www.shizuokatekko.co.jp/m_manualmilling.html