This one is a few seasons old, Oxygen Proton GS 178 serial #CO12320. Board still has lots of life left and TONS of camber. Titanium construction.
Stats:
Tip 24.0cm
Waist 19.5cm
Tail 24.0cm
Radius 14m
Oxygen lists the rider weight range as 60 to 100 Kilos.
I got this board from my brother (boarder Ted) and I rode it about 10 times over two seasons. Great board but I just got a Prior WCR
The Bad
The board has a broken insert on the front foot that has been epoxied to keep water out. It is a 4x2 pattern so does not limit stance options TOO much.
One scratch down the base beside the edge that should come out with a grind (board has not been ground to the best of my knowledge). It does not show up in pictures.
$150 shipped to lower 48