Rolex Perpetual submariner with clear back

by Michel
(Quebec, Quebec, Canada)

Hi!
I looked on internet and on Rolex official site and didn't see anything about this really special watch to me.
H
ow could I get any info on this particular model?
Year of manufacturing, price when my grand father bought it a few years ago, and how much and where could I sell it safely honestly at a decent price and close to my own town Québec.

Regards