I've had this guy forever and a day. I even had it since before I found the ad for it a couple years ago.
At the risk of sidetracking the entry... I have to wonder what exactly the process was in 1952 to be allowed to use the expression 'Certified WaterProof.'
We are all familiar with the rating system on Dive watches, in which an actual depth rating is used. There was a good reason everyone stopped (or was forced to stop) using the term 'Waterproof.'
I should add that even the depth ratings on watches need to be taken with a grain of salt unless it is an ISO Dive watch. Things like '3 atm' and the like are virtually meaningless, and there is a reason for this.
Depth rating certification is static, that is, the watch does not move during the test. I used to have a graphic for this, but can't find it at the moment. You need 100m depth rating and a screw down crown for surface swimming, and this is
due to breaking the surface tension of the water with your arms as you swim. When I worked at Breitling, we had a little pamphlet that illustrated this as well.