Actually...as soon as I saw the pinky table, I knew, Nathan...this is NOT a '62. It is later, like a '66... and appears to be one of the last Cleveland-made ones.
http://www.hnwhite.com/Serial Numbers.htm
So it is out of the 'sweet-spot' Zephyr era, but only due to the keywork revisions which HN White made very near their move from the Cleveland to Eastlake factory opened.
Zephyrs and Super 20 of this period are essentially almost identical minus some keywork differences and the neck being overslung.
While this is completely true....it is worth mention that those keywork differences are VERY significant.....as the ergos and key response of a late 60's (or later) S20 are much better than the late 60's Zephs.
So yes, body specs and neck tube specs are S20-ish, but the feel of an S20 is significantly different.
I love my Super 20 and I love the horns of this vintage ( Mine is 1970) but I would think that you Zephyr is better kept than sold, you are not going to make a great deal of money and it probably plays better than it looks.
Yes, that in a nutshell. Even with original finish, market value on one of these would be $850 tops in good playing shape (while the pre-keywork change Zeph would be more like $1200). Given the post-factory nickelplate, yours is probably only worth around $600 or so. But again, who cares ? As long as you are happy with it, enjoy. Although not of the highly-desireable era, they are still quality horns.