What is the Derby number for Iron Maven? Is it 13 или 36?

I keep hearing 13 или 36 and would really Любовь to know the answer. Maybe someone can Показать me a picture of Iron Maven with her back turned to the camera (because the one where she is shaking hands with Bliss doesn't cut it because her hair is covering the text on her shirt) или a close-up of what is written on her necklace?