Large antique ocean map backed on linen. Generally in nice fresh clean condition. Several dates to base 1942 & new edition 1948 so am assuming this is 1948 printing. Approximately measured 90cm x 50cm. Some instructions on how to use the chart to the reverse. A couple of small areas browning with a larger patch to centre bottom. See last photos. Some small holes at folding joins. See last photos This is not my usual area of expertise which is books so please message me with any questions.