Built in late '83 (the frame sticker says October which matches the table) my ST ends in 7812 - it was NY titled as an '84 when I bought it.
I am in NH, but I picked up the bike from a guy in Nyack, NY eight or so years ago. I believe it was a NYC commuter most of its life. I have the previous-previous owner's name somewhere, but I never tried contacting him. He was from the NYC area also.
It now cruises NH in semi-retirement, at least compared to NYC commuting. It's still a pretty clean bike and runs strong.