Cook Islands 556-559 blocks/2 ab pairs, 558a-559a sheets CTO

Cook Islands 556-559 blocks of 2 ab pairs, 558a-559a sheets, canceled to order, $15.45. Michel 683-690, Bl.104-105. 350th death Ann. of Johannes Kepler, astronomer, and 75th of Jules Verne, writer, 1980.