As far as I know, it was not part of the Lightweights collection, although it may have been produced around the same time Lightweights were being introduced.
I've noticed different weights and thicknesses of leathers in the NYC bags I've rehabbed.
It does look very dry in the listing photos. I would dunk and condition it, which should help a lot.
Oh well, no good news. The strap and the hangtag(!) cracked after dunking. Funny enough, I just asked whether anyone had a NYC bag cracking. Count me in, although I can’t say I had no warning - the bag felt weird from the start.
The bag survived the dunking, but it doesn’t look good at all. If it weren’t confirmed authentic, I’d have serious doubts. It just doesn’t feel like a quality leather, and all the scratches are still there. The beauty of Coach bags is that they look good even distressed. Not this one. I’ll take a picture tomorrow in a daylight.