Every watch dealer I've dealt with, and even my own watchsmith, says to service watches only if they're not keeping time or they're obviously broken (bent stem, for example).
Etchings on the caseback are usually servicing dates, but I can't make heads or tails of those (J-May 1967-C and EL-June 1974-C) with the alphabets being initials, perhaps??
And, yes, it looks stunning.
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