I have had two copies of the FA43, both MIJ. The black one was a later model, and the silver one has a serial number in the low 2000's
I sold the black one for a number of reasons:
The silver one looked sexier
It was *slightly* better wide open
The focus ring had a *slightly* better feel to it
There was a definite colour difference in the glass, which made me think there might be something to the stories.
The black one was still a superb lens. An album of images from it (when I was still on the very steep part of the digital learning curve) is
HERE