WS 9: Replacing the main spring of a Rolex Caliber 1570
Going one step closer reveals the beauty of the ca. 35 year old movement. I do not exactly know when it was serviced last, but it looked very clean to me. So there was definitely no need at all to engage the reliable Elma T310 ultra-sonic cleaning machine. Also the teeth show absolutely no wear. To me some of the wheels looked so new, they might have been replaced. Thus I was very happy with my purchase of this vintage Rolex. Views like this, simply make you feel good if you are a watch enthusiast.
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