Optimizer13
·@Spacefruit: The only thing I can confirm is, what I'm owning by myself. I have a nearly unworn full original 145.012-67, movement # 260xxx with old style chronosecond and a a nearly unworn full original 145.012-67, movement # 265xxx with new style chronosecond. I have no clue if Omega has used both types parallel or if there was a cut in 1967 after ser 260xxx.
Both watches have the tall Omega logo at crowns and crystals.
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Is the right dial glossy while the left dial is matte? I'm curious why some dials are more glossy than others...