Large early light bulb with platinum filament
Large and magnificent early light bulb with turned and spun brass bayonet base filled with plaster of paris. Platinum filament. No external markings but written in ink inside the base, 25W and IX. 18cm length photographed with a "normal" sized lamp for comparison. circa 1893. Postage is much cheaper if you buy more than one bulb.I guarantee to get bulbs to purchasers intact or will refund money.
Large bulb with platinum filament
Base of large bulb with platinum filament