KEH has two right now at KEH.com. They are expensive but they will work properly and also be warranted for 180 days. I have two as well but they are not for sale. It’s a great camera in high demand. Good luck.
Thanks Brian- unfortunately KEH does not tell you if they are New Mamiya 6 MF, or the slightly older New Mamiya 6.
If they did, I would have considered the expense.
I do believe that KEH does put MF version down beside the condition. Don’t know that for sure but feel like I have seen that. I prefer the regular to the MF. The MF has a busy viewfinder with all the lines for the different formats. If you do get an older one (non-MF), get the ones that have AE written out on the shutter dial, not the dots. The ones with dots are the oldest Mamiya 6 versions.