Based on some other characteristics, and after asking a gunsmith friend, I determined it was a Series 80. I emailed the seller to let him know what he was selling, and I let him know that his style of communication was not encouraging a sale.
Most people wouldn't have recieved what you said with gratitude. Not sure what you expected from him (thanks?). Probably should have forgotten all about him after you decided you weren't interested in the gun, but in reality, you just had to make a statement, right? He wasn't asking for your help. Sorry, but I think you started it. You just brought out the jerk in him...