LONGINES vintage tank Longines Tank cal. 25.17 Kofmehl Zurich. This rare Longines from the 30s is a rare Tank model in steel and bears on the rare sector dial a rare co-signed dealer's stamp from the Swiss jewellers Kofmehl in Zurich. The inside of the Longines cal. 25.17 movement is clean, but does not work, the moment is fully wound and is blocked. Also note that this watch does not come with a glass or leather strap. The watch dates from circa 1936. Reference : 61 18117 Case : 22x30mm Material : Steel. Serial number : 5323755 Expert appraisal by Jossip Wille (Le Petit Suisse)...