This chart/map is shows Archipel Des Tuamotu in the South Pacific. A beautifully aged chart, it has yellowed a little and has hand written notes in pencil.
It would make a gorgeous piece to frame and hang on the wall. Perhaps you've sailed these waters?
Old charts are hard to come by as once out of production retailers are required to return stock to be replaced with new editions.
Measures approx: 105cm x 70cm