It is in good condition with a large brass funnel as per the photos. It would transform that old lamp v. It will slot into a standard 24.50 mm BR aperture in the reservoir The adjuster shaft is approx 80mm from the centre of the burner.
BR RAILWAY LAMP SHERWOOD BURNER & RESERVOIR 69 MM x 140mm TALL SHAFT 20mm WIDE
BR RAILWAY LAMP SHERWOOD LYNLIGHT BRASS BURNER & WICK 80MM SHAFT
RAILWAY LAMP SHERWOOD VAPORITE CERAMIC BURNER & WICK STAMP BR LMR DAMAGE
BRITISH RAILWAY LAMP SHERWOOD BRASS BURNER RESERVOIR 68MM & REFLECTOR ASSY