Vintage Oldham Brass Miners / Admiralty Safety Lamp.    This is a listing for a used vintageVintage Oldham Brass Miners / Admiralty Safety Lamp, measures 10.1/2" height, 3.3/4" diameter, marked Oldham 900-4090. Not tried or tested by me.   UK Postage only. Overseas postage on application.   (See my listings for more collectables).