1949 - 1992, cancelled collection, interspersed with some good first day covers, to 1961 in the number of a major listing complete with good issues like Michel no. 113 / 15 used and on First Day Cover, 139 / 40 used, 143 / 46 used and on First Day Cover (Michel. 1.400.-), 302 / 06 on first day covers as well additional First Day Cover with 6 x Michel no. 1583x, nice and high-value collection on preprinted pages, high catalog value