This little darling just came back from being serviced at a local watchmaker I trust to work on vintage stuff. It's a nearly new 750-503B with original case finish and the (I've been told) rare blue dial. Wonderful caramel colored aged tritium hands and dial markers. Rotor marked Heuer-Leonidas. My watchmaker has it within COSC timekeeping standards, which is just wonderful for a watch this age.

I know the Autavia-pattern montrials with 2 sub-dials are considered (horologically) to be more significant than the initial-run Valjoux marked movement in this reference, but I'm told the blue dial and tachymetre make this one special, rare enough to not be in the usual catalogues.

So here's the conundrum (recognizing I'm in a Heuer forum)... keep it in the rotation or spin it and get an Omega Speedy Pro? I'm very confident I won;t find another Montreal in the same original condition any time soon, but I love the speedmaster case.

What would you do?

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