The definitions of vintage and classic are vague enough that you can certainly declare your 32-year-old Nishiki to qualify. Many car and bicycle enthusiasts use a somewhat arbitrary cutoff of 25 years. Others figure that any road bike which is old school, with toeclips, friction shift, nonaero brake cabling, etc., qualifies as "vintage." To many, "classic" carries an additional requirement of at least a modicum of quality. The Olympic is a good sturdy bike, but nothing special beyond that.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069