1948 (June)-1949 (Sept.) unused and used collection comprising (June-Oct.) on Mao portrait (14) including 3rd surcharge $3000 on $10 and 4th surcharge $500 on $3, both unused, 1948 (Oct.) Ploughman (27) to $20,000 mainly unused with shades, 1949 (Jan.-Sept.) Ploughman issue surcharged (186), a fine duplicated range with shades and a few varieties and covers (13). Yang NC265 onwards