FWIW I have an AMI T14 in my C12 clone and that mic is anything but thin. It's as full as my U47 alternate tube mic.
I'm just shooting for authenticity here regarding the T14/1. If the design/sound of the haufe T14/1 has changed since the 60s, that's an important aspect.
Also, I just found a quote from Klaus that describes the T14/1 as "anemic LOOKING," not "anemic sounding." I wonder if there was a mistake somewhere.
Also, Peluso makes a T14/1. I'd assume this is a Haufe copy due to the name.