Unique Early Hollow Surfboard

Scott Howlind stopped by with this unique, hollow surfboard, that was recently left in his dumpster! It's 9', 20" wide, 3" thick sloping to the rails, and weighs 28 lbs. It's solid in the nose, ribbed and hollow from about 2 feet back, with no drain plug or fin. The deck and bottom are domed and the rails are straight parallels but have some curve to them, kind of 50/50 and only a inch and a half thick. Looks to be from the '30s or '40s but we're not sure. Anyone out there seen one like it? We had a recent donation of one that was a lot more contoured, this is very plank-like but the domed deck is unusual.

 tail detail

nose detail