Actually, heathfield, the very earliest aircraft instrument s were white with either red or black "hands"... as seen in this Piper J-3 (Ca. 1938) photo:
http://www.nationalmu...70116-F-1234S-006.jpg
The ones on the left, especially the far left Tachometer are newer additions and are not authentic to this particular example...
Here's another that's better but the owner still couldn't find an old altimeter, which is the only black instruement (or, with the advent of glass cockpits, they're now called "steam gauges".)
It's a wonder that many really old pilots weren't sterile since the hands of the instruments were all coated with radium... the thinking being that if the notoriously unreliable c0ckpit lighting failed the hands would actually glow for about 15 minutes... time enough to get the craft on the ground, I suppose...
I have about 35 railway watches... some from the early 1900's... most in bell jars... most gold cased... I have the Hamilton - 23 Jewel - Model #950B pictured here (among others)
http://www.oldrailroadwatches.com/most_wanted ...