I would give 10 new surfboards.....
Gavin sent me some pics of his recent acquisition.
An original Mark Richard's Team Bolt twin fin shaped by Mark in 1983, complete with Victory Wetsuits sponsor decal.
This board is as rare as a bottle of 1942 Bordeau from the south of France when the Nazis were plundering the cellars and driving tanks across the vineyards. In 1983 Mark was at the height of battle with Cheyne travelling the world on tour and hardly shaping at all. And like the 1942 wine, I regard the year 1983 the premium vintage for twin fins.
Sure it could do with a little fixing up, but I would swap 10 new boards for this piece of design history.