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  1. Seiko & Citizen Trading Post
    For sale is my vintage Seiko Chronograph reference 6139-7010 Military Speed-Timer. Serial number 03xxxx (March 1970). Selling HEAD ONLY. Bracelet NOT included. The bracelet in the photos was purchased from Uncleseiko. Watch is all original and untouched. Case has swirlies and small dents...
  2. Watchmaking & Tinkering
    Hello, first time poster here. I was looking for a replacement crystal gasket for Seiko Speedtimer 6139-7020 and 6139-7010. I have tinkered just enough with these watches to feel comfortable replacing crystal and gaskets on my own. Given that the watch itself is from 1970s, I can understand that...
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