I was at Radio Shack looking for larger bulbs for my stop lamp but all they had was tiny 6 and 12 volt stuff... all sorts of base types including mini bayonet.
Slide bayonet? A bayonet is pushed in and turned..
lets see.. 6V and .6 watt.
.6 watts = current X 6V
current = 0.1 amps (100 milliamps)
iitem # 272-1115 is close (6.3 V , 150 ma) and its a stock item.