Your height: 5'8" to 5'11" (171 to 179cm) approximatly (?).
Frame size = 22.75in/58cm
Comments:
Over the years many parts were updated including hybrid style handlebar, gear and brake levers, rear derailleur, crank and more
Road Bikes: They are lighter and designed for speed and performance, comfort is less important. For racing, touring and long rides on bike paths and roads. Narrow wheels and tires are fragile and require more maintenance.
21 speed: perfect to go everywhere including going up very steep hills. There are 3 front chain rings and 7 rear gears. - Derailleur: Shimano Tourney
Tires 27 x 1 1/4: narrow tires with small thread or slick, for speed on asphalt, very common on vintage road bikes.