

As I was looking for a second hand road bike I stumbled on an auction with this bike on offer.
I am somewhat familiar with the Koga Miyata catalog as I have browsed a bunch of their brochures between 1993-2001 but I have never seen this one.
Based on the typography I would say it's from a year prior to 1998.
Plus I wonder if it is steel or aluminium.
Does anybody recognize this anomaly or can tell me from what year and material it is?
by XZK1MO_