Data General Nova 3
Front panel bulbs
The correct part number for the front panel bulbs is 014-000002; that makes it a CM2176 equivalent (a 1000 hour expected lifetime).
Possible replacements are the CM2185 and CM2187; the CM2187 is the better fit. Both would be noticeably dimmer than the originals (the CM2187 would be about 34% as bright). The CM2187 bulbs, powered by 24V, can be expected to last over 44,000 hours, however
If a brighter bulb is desired, the CM8361 is closer, but it would draw 60 mA instead of the 50 mA of the original bulb. (Even so, it would still be only 76% as bright as the original.)