Surfboards Hawaii

Year Built 196??
Shaper Not Sure
Manufacturer Surfboards Hawaii
Model Name Unknown
Location New York

I have had this board for 15 or 16 years. I traded some young cousins a 7’ egg for this board that was their Uncle’s. Now my cousins are all grown up and they’d like their uncle’s board back, and fair enough. The board has been out of the water for most of the time I have had it as it needed quite a few repairs. I had a local shop rehab it a year ago and have surfed it quite a few times.
I am wondering who might have shaped this. It only has one bit of writing on the stringer, the number 457. Does anybody have any Ideas who might have made this??