Beschreibung:

1852, plating studies of values from ½b. to 8b. including many multiples and comprising ½b. grey shades (48) with pairs (7, one interpanneau), ½b. grey-blue shades (98) with pairs (17, four interpanneau), strips of three (interpanneau) and four, ½b. lilac/violet shades (92) with a pair and a strip of three, 1b. grey-green, setting I (112) with multiples including strips of five (2, one interpanneau), 1b. deep green, setting I (78) with pairs (9) and a strip of three, 1b. deep green, setting II (140) with a fine mint corner block of ten, 1b. grey-green defective impression (60) with an interpanneau pair, 2b. olive-green (91), 2b. white shades (100), 2b. bluish grey (90), 3b. chamois shades (88), 3b. yellow shades (97), 3b. chrome-yellow shades (73) including mint blocks of four (3, one interpanneau), six, eight and twenty (very fine), 4b.light grey-brown shades (83) with pairs (3) and a strip of three, 4b. yellow shades (102) with pairs (4) and a strip of three, 5b. 1st. setting (103) with pairs (30), a strip of three and strips of four (2), 5b. 2nd. setting (97) with pairs (24), strips of three (2) and four, 6b. grey/greyish shades (88) with pairs (3), strips of three (3) and four (2), 6b. lilac shades (51) with a pair and strip of three, 7b. (64) with pairs (6) and strips of three (3), 8b. (117) complete with some positions overlapping and including pairs (12), strips of three (2) and four. A remarkable academic achievement that required many years of diligent research, yet still leaves scope for completion. (1850+)