The 'Sport Chief' was probably added to the dial. There's no mention of this movement being associated with any named series:
The serial number 13’183’536 identifies a yellow gold wristwatch with the reference 7634.
It is fitted with a manually wound mechanical movement, caliber 701 and was invoiced to Messrs. Hausammann, who were for many years our agent for Norway, on the 6th July 1966.
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