Thuringia Versicherungs-AG. (Thuringia Insurance Company). Enameled Iron. White Lettering with Emblem ""sich sichern"" (be secure) in Box. On Blue Background Surrounded by White Border. Mark was first introduced in 1978. 18 x 12 cm. Only a Small Quantity of these Marks were Produced. Circa 1978.- See Link Below for more Pictures and Auction Item information like Min Bid, Bulau, etc