I think the dial's genuine Omega, just a bit tired, and for an earlier watch.
All 105.012-65 I've seen have had narrow T's; for the -66 it seems that more HF have narrow T's than wide, and more CB have wide T's than narrow. All 145.012-67 I've seen have had wide-spaced T's, so I don't think this one's original to the watch.
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