rear lights date changes

[Lowdown Dirty Rat]

i thought this would have been covered before. but i cant find it.

i know type C - domed tail-lights started on 10/3/53 chassis no. 20-047102

but i cant seem to find out when in 1951 type A (glass) became B (plastic)?

[Tonny_Larsen]

Earlier I had the information on my page, but about a year ago I took it of because i wasn't sure it was right. I believe they are right, but I can't remember from where i had the information
This is the information that was:

A: Glas...... From ch. number 20-000001 until 20-012342.
B: "Plastic" From ch. number 20-012243 until 20-070431.
C: "Plastic" From ch.number 20-070432 until 20-117901.

-Tonny

[Lowdown Dirty Rat]

so you have April '51 as the change

but jan '54 as the change to domed. 10 months latter than i had read