Hello,  I have a pre-ban Colt Sporter that I aquired a few years back.  I believe it is aprox. a '91 or '92 vintage.  I was wondering where I could find out the exact year of manufacture?  Also I was wondering if this is considered a "blue label"  If not what is a Colt "blue label"?  (I Don't know much about Colt's this is the only one I ever owned).  Thank in advance.

Box colors, and more:
www.biggerhammer.net/ar15/coltcolors.html

See link posted above, then check www.biggerhammer.net/ar15/variants/