The "N" series was 1968-69. I think Sam's was earlier than this one. You can spot the earlier models because the white decorative pattern on the door was more swirly and had "Flair" in a script in a circle nearer the large oven handle.
This does look like a nice one - well taken care of, or hardly used ;-)
I think in one episode of Bewitched I saw a close up of this stove I think it had the word Tappan.
I am probably mistaken but did they make this style of stove too?
What was the big advantage of having a pull out cook top?
It's not like it was saving space, look at this monster.