1972 1973 Land-Rover Proprietary Equipment & Special Conversions Catalog. This catalog has items that are designed and available from the dealer and are as follows; Accessories, Agricultural Implements, Air Compressors, Electrical Equipment, Emergency Units (fire,crash/rescue), Lifts & Loaders, Personnel Carriers, Campers, Road Services (Municipal), Trailers, Winches, Miscellaneous Conversions. Dated6-72 so not sure if it's a late 72 or early 73 piece. Unusual item.