Just out of curiosity:
How come than in a sealed, 5B designated package next to the true blue ones 2 uncoloured ones were packed.
Was it common in the US to sell mixed packages (to serve as well daylight as tungsten film)?
By the way, my experience showed that bad (leaking) bulbs are the great exception, so not much to worry.
I do not see the control dot on these bulbs, otherwise one could check to be on the safe side.
Oh...Sorry.
This is Not Sealed.
A neighbor died. His wife gave me all kinds of Photography stuff that her husband had.
This package was open. Two blue bulbs were missing and there just happened to be two clear bulbs, and i put those in the empty slots.