A couple of weeks ago I posted on tuning up this Japanese plane purchased on E Bay from 'the Japan blade'. For anyone interested he has got a dozen or so planes for sale on E Bay right now.
All the planes are 60+ years old but they have never been used. The dai don't seem this old and they naturally need tuning up to fit the blade and chip breaker. The planes I have bought from Alex have been excellent and I would highly recommend buying any of these planes while you have the chance.