Signed Heuer, Retailed by Orvis, Solunagraph Model, Ref. 2446 SF, Case No. 324'289, Circa 1974

Heuer introduced its tide indication chronographs beginning in the 1950s, marketed under the names "Mareographe" and "Seafarer". Around 1970, Heuer began producing Solunagraph chronographs for Orvis, a retailer of fishing equipment. The present example offers an attractive dark grey dial which compliments the blue and white subsidiary dials, set within a well-preserved steel case.