If anyone has a Malcolm Mitchell 45xx 4mm kit or a 55xx 4mm kit, please can you send me a PM. Ideally, un-built. I would also consider the Churchward Models 45xx kit too. I'm happy to pay sensible prices.
Pretty fearsome horse - as an example, I have 2 x45xx, 2 x 44XX and 2 x 517. I worked on the idea buy when I could afford and once upon a time you could buy Finney and Mitchell kits cheap on Ebay too!