Add punctuation: During the autumn of 1996 and the spring of 1997 test runs and deliveries were carried out and now deliveries have begun in earnest at first in Scandinavia and then gradually throughout western Europe
During the autumn of 1996 and the spring of 1997 test runs and deliveries were carried out, and now deliveries have begun in earnest, at first in Scandinavia and then gradually throughout western Europe.