We are proud to offer you this vintage ORVIS/HEUER Solunograph Ref.2446SF in stainless steel with leather strap. Very rare model made for ORVIS by HEUER with a modified Valjoux 72 caliber. Orvis Solunagraph is a rare 1970´s chronograph from Heuer with a tide display (tide indicator), designed for sailors, fishermen and hunters. In the 20th century, HEUER was known for its robust and waterproof chronographs. In addition to the three-register chronographs, specialized timepieces such as the Solunagraph with an ebb and flow display were also produced. Due to the orbit of the moon and the rotation of the earth on its axis, the tides are different every day. The auxiliary register at 9 o'clock showed the fishermen and hunters the favorable hunting season. Sailors could also read the speed of their sailing ships from the tachymeter bezel. HEUER entered into a cooperation with the renowned outdoor retailer ORVIS and produced the Solunagraph, which was distributed by ORVIS. Hence the name on the dial. The pusher at 9 o´clock is to set the right position for the moon to calculate the right tidal timing for ebb and flow. You need a chart at the harbors masters house to set this right. Quite hard to find collectors beauty with a black dial and silver sub dials with blue elements. Amazing appeance with the black turning bezel inlay. This model also comes from a fine Munich HEUER collection. Comes with a one year warranty through our watch lab. - We buy watches since 1991. - -- All offered watches are on stock in our store. -- ---