When was the last Chicago built Schwinn
That may very well be Chicago.  Here is a guide to the different badges they used:

http://re-cycle.com/History/Schwinn/SwnC_Badges.aspx

As I remember, the biggest giveaway was if the badge was affixed with machine screws, it was from Chicago.  If it uses rivets, it's overseas.

Oh, and 1982 was the last Chicago Schwinn.  So if that one is 1983, you missed it by a year.