I see there is a Korona 5x7 at camerex.co.uk (if only it were 5x4) and for the muscular photographer a Linhof 5x7. I don't know the condition/age of either but the Korona was made 1910-1930, I think, so it might well have bellows sag. I bought a few things from camerex in the past and they are OK. PL