ID:
2513
Maker's Name:
Philips
Where made:
Germany
Dimensions:
3.5 × 4.2 × 9.3 cm
The glass envelope is painted externally to reduce unwanted illumination. The filament is positioned at the focal length of a spherical mirror plated at the back of the interior. An intense narrow band of light projects through a circular unpainted portion of the bulb.
Single central contact, three point bayonet fitting.
