11th century AD. A gilt-bronze Ringerike style 'Great Beast' finial for a Viking long-ship weather vane or other similar nautical piece of equipment, formed in the round as a standing quadruped with scrolls to the hips and shoulders, raised head with eye; rivetted at the feet for attachment to a rectangular plate now detached, the plate with eight rivet spikes for attachment to the underside. For ship-vanes of Ringerike style see Graham-Campbell, J., Viking Art, London, 2013, items 138-140; for a discussion of Viking-period weather vanes and their re-use as badges of nobility in Normandy, see Engström, J. & Nykänen, P., New Interpretations of Viking Age Weathervanes, in Fornvännen, vol.91, 1996; Lindgrén, S., Viking Weather-Vane Practices in Medieval France in Fornvännen, vol.91, 1996 and Lindgrén, S., Viking Weather-Vane Practices in Medieval France in Fornvännen, vol.78, 1983. 138 grams total, 93mm (3 3/4"). From a central London, Westminster, collection; previously in a private collection formed in Europe in the 1980s; this lot has been checked against the Interpol Database of stolen works of art and is accompanied by AIAD certificate number no.10983-181153. The navigation techniques in use in Iron Age Northern Europe were very sophisticated, as would be expected from people bordering the Baltic, North Sea and North Atlantic where boat- and ship-building traditions have been perfected over more than a thousand years. A carved wooden panel from Bergen, Norway, shows a number of Viking longships at sea, some with weathervanes mounted on the stempost. They are mounted vertically with the beast on the outer end. Gilded bronze weathervanes appear on the roofs of medieval churches in Sweden, Norway and Finland where they are often regarded as ornamental: symbols of access to resources and craftsmanship for the important families who endowed such buildings. These weathervanes in many cases originally adorned ships and were used as part of the navigational equipment. They may have inspired the medieval Norman custom of attaching a gilded weathervane or cock to church roofs, which eventually spread to secular buildings such as castles in France and Italy where their use was restricted to certain ranks of nobility (Lindgrén, 1983"). Weathervanes were used for determining the strength and direction of the wind, in conjunction with the sólarsteinn (sunstone) Icelandic feldspar which polarises sunlight and allows the sun's position to be determined in overcast conditions. A wooden bearing-dial fragment was found in Greenland - a destination colonised by Icelanders in the 11th century - with the 'horizon' divided into 32 sectors. This would give an accuracy of about 11 degrees per sector, which would make landfall using latitude sailing a straightforward matter. Engström & Nykänen (1996) suggested that the vanes were decorated with holes or markers on the outer edge which enabled the helmsman to make an assessment of the sun's height from the position and length of the shadow, and thus to work out his position by rule of thumb. These holes may have been used to attach streamers as a visual aid. The ships equipped with these weathervanes may have been the 'flagships' of their fleets, taking the lead in navigation and in manoeuvring. The dragon on the weathervane may thus have signified the position of the fleet's leader, and may even have given rise to the name drakka (dragon) for the largest type of Viking period ship. Condition Report Fine condition.