400 Nitro, of course I miss the splendid Rigby but the price I got for it in August 1998 was very substantial, I had tried to sell it for X through SGN and Gun List without a response and got X+30% from a prominent dealer, he then resold it, no doubt at another big bump, to a collector of whom a fable is told: the collector was having guns made at Purdeys, was dissatisfied with the pace of the work, and purchased the lease on Purdey's building from the City of London, then took an apartment on the top floor so he can bug the gunsmiths. Whether this is apocrypha or truth remains uncertain. I have met the collector who is a nice gent, obviously monied, but had not heard the tale at that time so did not ask him about it !!!!!!!!!