Start of the sale:
Tuesday, March 17, 2020 at 11:25 PM
Thursday, June 4, 2020 at 2:39 PM
SOUTH SUDAN Surcharged overprints SERIF on 1 SSP Birds of 2nd set, 4 different overprints exist: 150 SSP white on blue, 150 SSP black on gold, 200 SSP black on silver and 250 SSP black on gold. 1SSP Birds shows Shoe-billed Stork (Balaeniceps rex).
Due to a radical devaluation of the South Sudanese Pound (SSP) new postal rates are being introduced and the remaining lower values of the 1st and 2nd set have been taken out of circulation and have been surcharged.
Save postage costs by combining purchases. See my other sales for South Sudan, Uganda and Bhutan.
For more information about Postage Stamps and Postal History of South Sudan, kindly see relevant entry in Wikipdia.
See also the Facebook group "South Sudan Stamp Collectors".