This Seiko: 6139-6010 is one of the first one ever made in February 1969 and in spectacular original condition. The Blue 6010 has to be one of the nicest blue dials ever made in my opinion.
Case ref: 6139-6010 in good unpolished condition. Case size 39mm w/o crown. Seiko Calibre 6139A in good condition serviced by me.
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