Whitman Expo
CAC approved and CACG encapsulated coins fared well in public sales during the month of July 2026.
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Obverse Description
Spanish text; 5th of November hydroelectric dam on the Lempa River (presa hidroeléctrica “5 de Noviembre”)
Reverse Description
Spanish text; Christopher Colombus (Cristobal Colón) facing forward
Catalog Information
GSID:
196961
Variety:
31 DE AGOSTO DE 1971 Sig 39: Martínez/Suárez/Herrera Series FN
BNB #:
B1046a
Pick #:
P119
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To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for 31 DE AGOSTO DE 1971 Sig 39: Martínez/Suárez/Herrera Series FN
Body: Referring page: https://www1.greysheet.com/prices/item/31-de-agosto-de-1971-sig-39-martínez-suárez-herrera-series-fn/gsid/196961 GSID: 196961 Title: 31 DE AGOSTO DE 1971 Sig 39: Martínez/Suárez/Herrera Series FN
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Bank Note Value History
31 DE AGOSTO DE 1971 Sig 39: Martínez/Suárez/Herrera Series FN
Value By Grade
31 DE AGOSTO DE 1971 Sig 39: Martínez/Suárez/Herrera Series FN
Banknote Book values
Currency
Grade Range
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Pricing
Values
Banknote Book (CPG) Values
31 DE AGOSTO DE 1934 Sig 1: Bustamante/Alfaro/Duke Series A
Worth: $35 – $300
4 DE SEPTIEMBRE DE 1941 Sig 4: Guirola/Alfaro/Duke Series C
Worth: $35 – $300
14 DE ENERO DE 1943 Sig 5: Laxton/Alfaro/Duke Series D, E
Worth: $30 – $275
Two diagonal red SPECIMEN ovpts front; all-zero s/n
Worth: $250 – $250
Two diagonal red SPECIMEN ovpts front; all-zero s/n
Worth: $250 – $250
Two diagonal red SPECIMEN ovpts front; all-zero s/n
Worth: $250 – $250
31 DE AGOSTO DE 1934 Sig 1: Bustamante/Alfaro/Duke Series A
Worth: $50 – $175
19 DE MARZO DE 1942 Sig 2: Duke/Alfaro/Duke Series B
Worth: $50 – $200
11 DE ENERO DE 1944 Sig 6: Craik/Alfaro/Duke Series C
Worth: $50 – $200
3 DE ENERO DE 1951 Sig 3: Rodriguez/Alfaro/Duke Series D
Worth: $50 – $700
2 DE MAYO DE 1951 Sig 9: Meza/Alfaro/Duke Series E
Worth: $50 – $700
14 DE MAYO DE 1952 Sig 10: Tomás/Alfaro/Duke Series F
Worth: $50 – $700
Two diagonal red SPECIMEN ovpts front; all-zero s/n
Worth: $250 – $250
Two diagonal red SPECIMEN ovpts front; all-zero s/n
Worth: $250 – $250
Two diagonal red SPECIMEN ovpts front; all-zero s/n
Worth: $250 – $250
Greysheet News
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8/18/2026
Editor's Message: Red Book Quarterly Summer 2026
This issue of Red Book Quarterly comes amidst the thick of a rare coin bull market.
8/17/2026
A New Chapter for Raleigh Money Expo Starting in 2027
Whitman Expos and Raleigh Coin Club Partner to Create the Carolinas' Premier Collecting Event and a New National Numismatic Destination.
8/15/2026
Events
Heritage Auctions: US Currency Tuesday Select Auction
Location: Heritage Auctions
Tuesday, June 2, 2026
Heritage Auctions: World Paper Money Tuesday Select Auction
Location: Heritage Auctions
Tuesday, June 2, 2026
Heritage Auctions: US Coins Tuesday & Wednesday Select Auction
Location: Heritage Auctions
Wednesday, June 3, 2026