Johannesburg Numeral 20 Postmark
20a - (3 February 1903) rated 3R
20j - (12 January 1920 - 1985) rated Common
20k - (23 January 1922) rated Common
20l - (6 May 1903 - April 1905) rated 2R
20m - (8 January 1916) rated Common
20o - (17 February 1947 - 12 August 1978) rated Common
20q - (31 May 2000) rated Common
Top row: Left to right: 20a, 20j, 20k, 20l. Bottom row: Left to right: 20m, 20o. 20q
20a
20j
Johannesburg postmark 20j. Dated 29 August 1929. Rated common
20l
20o
Putzel ratings
20j - 228 rated 16 on stamp and 80 on cover
20j - 226x (Update) rated 16 on stamp and 80 on cover
20j - 230 rated 10 on stamp and 50 on cover
20j - 231x (Update) rated 2 on stamp and 10 on cover
20k - 227 rated 16 on stamp and 80 on cover
20m - 226 rated 16 on stamp and 80 on cover
20o - 231 rated 2 on stamp and 10 on cover
20q - 231y (Update) rated 2 on stamp and 10 on cover






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