POFIS SO 1920

NV1-8:

Charley's corner. Jan/1976, p.13.

SO1-23:

60 haleřu stamp overprinted SO 1920, comb perforated 13 3/4x13 1/2. Oct/1972, p.115.

Charley's corner. Feb/1976, p.30; Mar/1976, p.44.

Czech expert speaks. May/Jun/2000, p.28.

Objects of interest on Czechoslovak stamps. Mar/1972, p.43.

President's corner. Jul/Aug/1991, p.16.

S O 1920 overprints on Czech Hradčany stamps. Apr/1966, p.65; May/1966, p.85.

SO5:

Czech expert speaks. May/Jun/2000, p.28.

SO14:

60 haleřu stamp overprinted SO 1920, comb perforated 13 3/4x13 1/2. Oct/1972, p.115.

SO28-32:

Charley's corner. Jan/1976, p.13.