LONDON.- A six inch gauge model steam engine built by Lucas and Davies for a railroad hobbyist called Mr Percy Leigh in the late 19th century, which formed part of the most costly miniature railway system in the world, is to be sold at Bonhams, New Bond Street as part of the Bonhams Veteran Motor Cars and Related Automobilia sale on 5 November 2010. It has attracted a pre-sale estimate of £25,000 35,000. The steam engine was first described and illustrated in an article about the railway system by Robert Machray in Harmsworths Magazine (1898) entitled The £10,000 Toy. Machray wrote that the steam engine was an exact duplicate on a small scale of an express of the London and North Western Railway. More recently it has been referred to as looking something like a real one. The engine and tender originally cost around £320