New old stock original Lucas panel lamp, part number 54057245. Marked 'Butlers England'. Butlers part number BU/1572/S. Takes a BA9S base bulb. Complete with mounting stud nuts and washers, wired connection finishing in a 6.3mm female LUCAR connection. Applications include Massey Ferguson MF135, 165, 185 tractor dash/panel lamp. A really nice original part.