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.