my grandparents had a grandfather clock, it always struck me it looked odd as it was black, my dad told me that some of the men in his family ( 5 boys 3 girls) had decided to fix the clock for some reason and the cogs were made of wood and black was the paint they had so black it was, I can remember it chiming but as to accuracy I don't know
my wall clock is very similar to picture 4
Nice collection though