You can usually tell a bath and a half Newell from the windows. In the very rear of the coach on the passenger side if there is a small window it's probably a 1-1/2 bath. My '98 doesn't have that window and is a mid walk through bath.
Oh and there are a few mid-entry Newells with a window in the door. Just not very common. Like Clarke said they are all custom built.
Yes they are heavy, we full-time in a 45' 2 slide 1998 and carry more than we probably should. We still have about 1000# carrying capacity and a 10,000# towing capacity.
Newells are built to a different standard than most other motorhomes.
The best way to tell the year is from the front end design. Like others said check out newellgurus.com there is quite a bit of info there.
Let me apologize in advance if I don't seem overly friendly or if I don't sit outside enough to please others. We are not camping, we are living full-time in our Newell. We chose the Newell for many reasons, one of which is value. The few people I've told what price we paid were amazed. I had no problems buying a 15 year old coach.
If we're not "home" we're out enjoying life. Somedays we're out sightseeing, riding the RZR, hiking, shopping, eating, etc. Some days we're inside because my back hurts, got work to do, etc. Or I don't enjoy sitting in the sun, I do love the shade though.
We've met quite a few different people while traveling and I won't make the distinction over which type of RV they have as to who was the friendliest.
And please don't be offended if I don't invite you into our home. Would you invite a total stranger into yours?