Marchal Bulb, 45 / 40 Watt, 12 Volt
This is a 12 Volt bulb with a BA21d base. It has 2 filaments (high and low beam). The BA21d base has two contact pad at the bottom, the metal base has 3 bayonet pins. Please review the images for details.
Also available in 35/35 Watt and in yellow, as well as in 6 volt, these were used in many vintage european automobiles.
For additional specifications, please review the item specifics.