PLEASE NOTE: Delays in processing orders. Orders placed between Tuesday 21 January and Monday 10 February will be processed 11 February.
Instrument bulb - 6v 4w bayonet small glass (9mm dia), long glass. Original instrument bulb. Bulb has Ba9s mcc base. Original bulb number: 988, 951 Ba9s (aka Type 51) mcc = bayonet, miniature centre cap, equal pin base, 9mm diameter, single contact (normal post-war pilot light)