desc_issuer: North China Liberation Area desc_denom: 50c Used by 1 overprinted stamp: North China Liberation Area postage 6/13/1949 $20 issue=1949e oc=blk on=50c Not used by any images. Matches 2 types: North China Liberation Area postage 1/1949 50c issue=1949a d=infantry charge North China Liberation Area postage 3/7/1949 50c dkredvio issue=1949c d=++on=5c |