I think I saw them first in about '63. They're clearly not new.

-----Original Message-----

> > anyone know when silver
> > and gold were added as multipliers as well as tolerance bands?. They
> > only seem to have started being used in the last few years, and were
> > never mentioned when I was at college or in any colour code tables I
> > ever saw?.

Definitely in place when I learned them first, in around '69