Whitman Expo
The search is on for special quarter dollars that will be placed in circulation by the United States Mint as part of the nation's Semiquincentennial celebration.
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Obverse Description
English text; Dr John Garang de Mabior; spear
Reverse Description
English text; Juba Nile Bridge over the White Nile river
Catalog Information
GSID:
135486
Variety:
2020 Sig 6: Abdalla/Mabiordit Prefix AR
Coin Date:
2020
BNB #:
B116b
Pick #:
P16a
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Subject: I would like to contribute catalog info to CDN for 2020 2020 Sig 6: Abdalla/Mabiordit Prefix AR
Body: Referring page: http://beta.greysheet.com/prices/item/2020-sig-6-abdalla-mabiordit-prefix-ar/gsid/135486 GSID: 135486 Title: 2020 2020 Sig 6: Abdalla/Mabiordit Prefix AR
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Bank Note Value History
2020 2020 Sig 6: Abdalla/Mabiordit Prefix AR
Currency
Grade Range
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Pricing
Values
Banknote Book (CPG) Values
ND No date Sig 1: Aleng/Athorbei Prefix AA Intro: 19 10 2011
Worth: $18 – $18
ND No date Sig 1: Aleng/Athorbei Prefix AA, AB Intro: 19 10 2011
Worth: $20 – $20
ND No date Sig 1: Aleng/Athorbei Prefix AA - AD Intro: 19 10 2011
Worth: $17 – $17
ND No date Sig 1: Aleng/Athorbei Prefix AA - AQ Intro: 18 07 2011
Worth: $1 – $1
ND No date Sig 1: Aleng/Athorbei Prefix AA - AL Intro: 18 07 2011
Worth: $2 – $2
Replacement: Prefix ZZ
ND No date Sig 1: Aleng/Athorbei Prefix AA - AK Intro: 18 07 2011
Worth: $2 – $2
Diagonal red SPECIMEN ovpt front/back; all-zero s/n
Worth: $120 – $120
Replacement: Prefix ZZ
ND No date Sig 1: Aleng/Athorbei Prefix AA - AE Intro: 18 07 2011
Worth: $6 – $6
Diagonal red SPECIMEN ovpt front/back; all-zero s/n
Worth: $120 – $120
ND No date Sig 1: Aleng/Athorbei Prefix AA - AC Intro: 18 07 2011
Worth: $15 – $15
ND No date Sig 1: Aleng/Athorbei Prefix AA Intro: 18 07 2011
Worth: $20 – $20
Replacement: Prefix ZZ
2015 2015 Sig 2: Mayik/Athorbei Prefix AL - AR
Worth: $2 – $2
Greysheet News
Special Quarters Headed for Circulation
8/10/2026
The Business of Numismatics: August 2026 Greysheet Editor's Letter
With the month of July and all the celebrations of Independence Day behind us, the rare coin market looks with anticipation to August.
8/7/2026
Stack's Bowers Galleries Presents the Extraordinary Mack C. Chase Collection of Walking Liberty Half Dollars in the 2026 Global Showcase Auction
"These coins have been off the market for at least 10-15 years, and many of them are in older generation grading holders as well, adding to the excitement," comments John M. Pack.
8/7/2026
Events
Heritage Auctions: US Currency Tuesday Select Auction
Location: Heritage Auctions
Tuesday, June 2, 2026
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Location: Heritage Auctions
Tuesday, June 2, 2026
Heritage Auctions: US Coins Tuesday & Wednesday Select Auction
Location: Heritage Auctions
Wednesday, June 3, 2026