Sheet 86H/3/SW Button Islands HIND 1023 First Edition 1943, reprinted 1943. First Edition, Aug 1943. Compiled from 1:40,000 air survey Jan 1943, half-inch (1:126,720) published sheet 1886, and 1:96,100 Admiralty Chart 1419 Nov 1890. HIND 1023. Published SGI. Reg.No.795 X.D.D'43–X'43. Printed SIO. Yard Grid IVB.