I am a little bit familiar with Hap Jacobs surfboards and I know he sold his naming rights didn't shape for a while and eventually got back into it. I came across a Jacobs that has a diamond logo with the words "Hap Jacobs Classic Model". The serial # is 1530 and it has Haps signature between the double stringer. I am trying to figure out of this board was shaped by Hap Jacobs. I am guessing it was shaped in the late 80s or early 90s due to the resin fin loop. Are the logo and signature consistent with a board Hap could have shaped?