Dr No[Moderator Omega - Wristscan]
37543
Reflection, Raymond - the dial's slightly domed . . .
. . . and the rim can appear darker than, or identical to, the central section, depending on the angle it's held to light.
I believe it's 34 mm in diameter, but will check with my watchmaker's calipers next time I'm there to confirm.
Best,
Art