what model Parlee is this?
 

I picked up a nice looking Parlee recently. But don't know the model.
can anyone ID it or tell me how I would figure out the model?
I am thinking Z1 (the top tube is almost horizontal). but am unsure.

https://cimg5.ibsrv.net/gimg/bikefor...3d4e6d9e9c.jpg
https://cimg3.ibsrv.net/gimg/bikefor...c0e075c7c0.jpg
https://cimg4.ibsrv.net/gimg/bikefor...53a5a78665.jpg
https://cimg7.ibsrv.net/gimg/bikefor...6d4396b5b2.jpg
https://cimg8.ibsrv.net/gimg/bikefor...2c7dfa0bf0.jpg