There is a story there also;
Having already used one of our sets of NOS heater channel bottoms on the '51 restoration, we were having second thoughts to use the other set we have and at this time only the half section repair was available.
So, we contacted hooky of hooky's panels and sent him our NOS ones as a master for him to start reproducing exact copies.
This way we got to keep our NOS ones and had some exact copies to use also everyone else now had access to perfect replacements.
Three birds with one stone, as they say