A very rare, Omega Speedmaster step dial with applied logo
Originally used between 1964 and 1969 on references Ed White 105.003-63, 105.004-64, 105.003-65 and 145.003
The lume is only visible in darkness for few seconds and after that is very faded, almost non visible
The characteristics of this dial are absence of Professional text, step dial, applied logo, tritium indexes
Singer signature on the back