Bet that tire was made by Vittoria. Bought a bunch from Pal Alto Bikes late '70s as training tires. Labels changed but that ribbed tread was common. Never knew how much I took that tread for granted until it disappeared from the market. Fell beck in love when Vittoria brought it back with their Corsa G+ tires. (IMHO, the best tread for climbing out of cracks and back onto the pavement after riding off, either by accident or to dodge passing cars.)

Photo brings back memories. Just for fun, could you measure the width inflated? My memory says between 21 and 23mm but in those days we never measured. (Calipers were a lot less common and the cat liked to run off with the metrics.)