this is a very rare Cartier Tank organic wood „Jumbo“, reference 21611, which was only produced between 1975 and 76, right before all three cartier boutiques in New York, London and Paris were sold and formed to a single company. This bigger of the two versions of the „Organic“ wood collection was sold over the new york boutique and features the dark brown spinel cabochon crown and an engraved goldplated caseback in french language. the 25.5 x 33.5mm case covers a Cartier caliber 78-1 which is built from a 2512 ETA movement base. It runs very well, not being in the need for a service soon. All original wood parts about this watch are crackfree and in original condition. the watch comes on a beautiful brown leatherband with golden buckle and a nice vintage cartier box and in addition a grey lizzard leatherstrap.