This is a used switch assly from a 1975 MKIII Norton 850, these were also used on '79 and later Triumph T140. Includes lower half casting with perch and lever. This part has become unavailable anywhere. These are Lucas originals. I have 2 of these available. I also have 2 new Sparks replicas, also $300 ($220 USD) plus $25 postage in North America. chasfix@aol.com