Andersok
Posted July 31, 2016 - 7:59am
Welcome to the club, you've picked up a nice Oceanographer 'C', as seen in this 1969 ad:
It looks to have originally been fitted with the black rally strap. Looking through the ads I found only one other Oceanographer that did not have either the calendar or the day&date; so perhaps not that common without it or a way to offer this model in a lower price bracket. Dial in ad may show Waterproof instead of the 333 Feet on yours; laws around this time changed and limited advertising 'Waterproof' on watches that were not, so not a concern that it does not match.