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IIRC, those are 2 and 3 minute dials Tachymetres. So 1 minute is '60' X-per-hr, 2 mins is 30, 3 mins is 20. So they are just extensions of the bezel.
IIRC, those are 2 and 3 minute dials Tachymetres. So 1 minute is '60' X-per-hr, 2 mins is 30, 3 mins is 20. So they are just extensions of the bezel.