Which taillight?

Good afternoon everyone!
Hopefully someone out there in the forum can help me with an enquiry. I have an RT125/1 registered in the DDR in January 1954 and I was wondering what taillight it should have, either the “witches nose” or the taillight with the orange brake light?
Many thanks for any advice!
Kind regards, Neil
Hopefully someone out there in the forum can help me with an enquiry. I have an RT125/1 registered in the DDR in January 1954 and I was wondering what taillight it should have, either the “witches nose” or the taillight with the orange brake light?
Many thanks for any advice!
Kind regards, Neil