According to this link the ID letters 'should' be PMB-C, printed in red paint on the left side of the ID tag.
https://www.ctci.org/fordomatic-tran...dentification/
But the paint on the tag is missing, washed off at the transmission shop. Someone who shall remain nameless didn't take a photo of it first.
There are some remaining numbers & letters on the tag if they're helpful. 19-1872S2
I've found some info online that may(?) be helpful once I can review it. But may not be looking at the best websites for this transmission.
Just in case these tag photos designate something meaningful I'm including them below.
photo 3 - During several internet searches I haven't come across another Fordomatic transmission image that matches the passenger side of the main case this one has.