I have what I believe to be a 1967 spaceview conversion. Has the m7 date code on back. My question is how do you know if it's official conversion parts used like they did the conversions at the jeweler at time of sale or was done at a later time ect. Any information and knowledge you may have is extremely appreciated as I'm just learning about these! It is running extremely accurate on the 387s battery. I just received this in the last week and love it 🙂
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