The JM only mentions a 55 TIN back bulb only saying the 12V logo was in the glass cover. Well!
There was a first design Tin back 12V having no logo
There was a second design Tin back 12V having the logo
There was a third design (seal beam ALL glass no Tin back) having a logo
So there were three bulbs used in 1955
First design because it looked like a 6V Tin back only had a sticker on the glass saying 12V so that a person knew which was which when replacing a bulb but also had a silver color back not black like the 6V and later 12V that had the 12V logo .
But as of now the JM dont mention this!!
The pic at the right showing a Muti-purpose-lite used as a night light when replaceing a flat tire. Just an accessory !!
There was a first design Tin back 12V having no logo
There was a second design Tin back 12V having the logo
There was a third design (seal beam ALL glass no Tin back) having a logo
So there were three bulbs used in 1955
First design because it looked like a 6V Tin back only had a sticker on the glass saying 12V so that a person knew which was which when replacing a bulb but also had a silver color back not black like the 6V and later 12V that had the 12V logo .
But as of now the JM dont mention this!!
The pic at the right showing a Muti-purpose-lite used as a night light when replaceing a flat tire. Just an accessory !!