Sugiyama shows two LustreFlex models - a "C" and this, which is called the "Export Model". McKeown seems to have lifted this information direct, but shows no pictures. Mine is slightly different from the Export version shown in Sugiyama, having the logo on the top which he shows only on the "C".
The logo itself seems to say "Lustrix" or something similar - the lettering is a shade obscure. It's quite a neatly-made model, functioning reasonably smoothly for its age.
Taking lens is Tri-Lausar Anastigmat 80mm f3.5
Shutter is Synchro-Super 1 to 1/300