To answer a few questions.
It is sort of a period correct thing. More so I have one and need another.
The bronze bushing thing is irrelevant in this case. I will be rebuilding them anyway using a kit from Amir Aviztur. I have Dural Forge calipers with both bronze and plastic that I have not rebuilt.
Photo below is shamelessly ripped off VeloBase, but it is what I need.
Photo below is what I have for trade. I would expect whatever I get back to be the same but Dural Forge. That is no mounting bolt or pad hardware. This is not rebuilt.
