Dear Zodiac experts - may I have your best opinions please?
Through the excellent Zodiac catalogue site I believe to have identified this watch in the 1992 catalogue as ref 806.21.03. Its a quartz and that's all the info I have (and yes I'm permitted to use the image).
But am I right? What do you think?
Yes, it is also in the 96 catalog too. The model number you mentioned should be stamped on the back.