I just picked up the unpainted beige base version of this signal. How can I tell if the “clear” red & green pin bulbs, currently in the signal, are the 12 r/g ( 6-8 v) or the 19 r/g (14 v) version?
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The bulb number is molded into the glass just above where the pins come out.
The 253 with the auto stop station mechanism uses 6v bulbs, 12-301, 12-302.
Thank you both for your responses. I see “19” molded into the glass on the 19R & 19G bulbs. I don’t see anything molded into the 12R & 12G bulbs. So that may be the visual distinction between the 2 bulbs.
I stand corrected concerning the #12 pin bulbs - This weekend at the Lancaster, PA Train Show, I purchased some 12G pin bulbs that did have the "12" molded into the glass.
