Old Pig Identification - Dual Curved Balsa Stringers

I acquired an old 9'2" pig in really rough shape. It has double 3/4" curved balsa stringers that are joined at the nose and tail and are 4" apart at the middle. I've never seen dual curved stringers like this. The board was painted at some point and then coated with resin which was peeiing off.  The fin is missing and the nose block is rotted off.  I'm guessing it's a late 50's/early 60's board. There is a Surfboards by Phil sticker under some resin but on top of the paint so I think that was added well after it was made.  Phil Sauers provided boards for many of the 60's surf movies. I sanded off most of the paint off and am thinking of making it water tight and just seeing how one of these old heavy pigs ride. Any ideas or comments?     Thanks, Tom