Definitely 80's Reg White with Sailspar mast and beams. With the three tone waterline it's a Reg White 'Special'. This means extra local reinforcing, stiffer decks etc.

Rolf, you're right. It was only the rear beam that had the inner gunwhale plate. Main beam was normal bolt through. The mast doesn't look as though it's been set up with sufficient pre-bend and, of course, the sails will just be the 'classic' rig.