collection of 8 reply coupons, all used with arrival cancels, number 1 (3 different types incuding 26.10.1907 first month of issue), 3 with changed rates, 5x changed, (33, 38, 52, 66 and 50), 28 to 52, 28 to 33 and 52 and number 3 (2x), all very fine