I was told when I bought this Hamilton 987E some years back that the E stands for Elinvar.

Sure enough, the balance wheel is solid, but the spring is blue.

It must have been one of those that you hear so much about that was intentionally colored blue because people didn't have any faith in the white metal balance springs.

It looks like the winding wheel is rubbing on the case a bit. I'll have to have my watchmaker look at it. Anyhow, I really like this watch!

Steve G.

Here is a better shot of the dial.