Ara
·..and before the White and Blue was signed off, we played around with another design. You can see the contrast between the "silver/ yellow" dial on the left, which was the same dial colour as used on the Siffert prototype shown above and the final production Siffert...much whiter!
Thanks for posting these. I’ve been dreaming to see what a Heuer dial would look like with a red logo. This just made my day.