Robert S. Butler posted:I don't have the latest version of the Hornby Gauge O System but a check of the pictures in my book would argue the engine in the lower left is a Hornby No.1 ca 1931. The picture in the book of the Southern #111 on page 45 of my reference appears to match your engine in all respects save one - I can't tell from your picture nor from the picture in the book the shape of the chassis front. Your camera angle suggests it is a straight step from the chassis down to the front part of the engine where the buffers are attached but I can't see the side and that aspect of the engine pictured in the book is difficult to determine.
May I see a picture of the loco in the book?