I would say a NW2. Early stages, but if you're balding, just get on finasteride and then try to stop worrying about it.
I was pretty much a NW2 5 years ago when I first came on here, or between NW2-3, and many here were telling me I'm a NW3 and "my hairline is toast" and all this stuff...what I'm saying is some people here are alarmist.
If I had just stayed on finasteride back then and added rogaine at some point, I probably could have maintained a NW2 and no one outside my close friends and family would know I have a problem for like 10 years.