HOW OLD IS THIS 673?
Now the secret is out! You've figured out our secret codes...
Actually, we only began sewing the tags into our jackets in the early 1990's. and the 5th digit in the sequence represents the last digit of the year in which it was produced. In otherwords, the 5th digit of your jacket is a "4". Therefore, I can tell you that the jacket was produced in 1994.
Thank you for supporting Schott throughout the years!