Colchester Mascot "Mk. 1" 1950s to early 1960s "round-headstock" model. Instruction and Maintenance Manual, Illustrated Parts Manual as Parts Pictures and a copy of the Sales & Technical Specification Catalogue. This lathe was sold in the United States as the Clausing "Mammoth" 17-inch Models 6582, 6542,  6594, 6583, 6554 and 6543. Originally printed as a small A5 booklet, this has been doubled in size to A4 (slightly smaller than "Letter"). Pictures of an example of this lathe here: http://www.lathes.co.uk/colchester/page24.html