I bought this Seapearl on ebay a few months ago. I think it dates from 1958/9?
Duncan Hewitt (The Watch Bloke) has it in for service at the moment.
I love the quirky design, the sweep second hand is just crazy....
Here's mine...caseback says January 1956. Mines an automatic. It must be one of the earliest. You certainly don't see many of these with an automatic movement.