Start of the sale:
Sunday, May 30, 2021 at 3:16 AM
Sunday, June 27, 2021 at 4:25 PM
SOUTH SUDAN Surcharged overprints SANS SERIF on 1 SSP Birds of 2nd set, 3 different overprints exist: 150 SSP black on gold, 200 SSP black on silver and 250 SSP black on gold. 1 SSP Birds shows Shoe-billed Stork (Balaeniceps rex). The overprint on the 1 SSP Birds exists in serif and non-serif for the "SSP" text on the golden and silver base.
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".