Whitman Expo
Commissioners reviewed reverse designs for the four American Innovation dollars scheduled to be released in 2028 and obverse and reverse designs for the 2027 issues in the Comic Art Coin and Medal Program.
Thank you to our sponsors!
Go check them out!
Obverse Description
Portuguese text; allegorical tribal scene; first president, António Agostinho Neto
Reverse Description
Portuguese text; coat of arms; workers harvesting crops
Catalog Information
GSID:
85382
Variety:
14 DE AGOSTO DE 1979 Sig 2: Carvalho/Martins Prefix A/A - P/B
BNB #:
B506a
Pick #:
P114
Send Catalog Feedback
Subject: I would like to contribute catalog info to CDN for 14 DE AGOSTO DE 1979 Sig 2: Carvalho/Martins Prefix A/A - P/B
Body: Referring page: http://www.greysheet.com/prices/item/14-de-agosto-de-1979-sig-2-carvalho-martins-prefix-a-a-p-b/gsid/85382 GSID: 85382 Title: 14 DE AGOSTO DE 1979 Sig 2: Carvalho/Martins Prefix A/A - P/B
Subscribe to View
Log In
View more data, info, and visualizations. Get access to retail and wholesale pricing as well as auction data.
Bank Note Value History
14 DE AGOSTO DE 1979 Sig 2: Carvalho/Martins Prefix A/A - P/B
Value By Grade
14 DE AGOSTO DE 1979 Sig 2: Carvalho/Martins Prefix A/A - P/B
Banknote Book values
Currency
Grade Range
Sort by
Pricing
11 DE NOVEMBRO DE 1976 Sig 1: Mingas/Lilolwa Prefix AA - BF Intro: 08 01 1977
Worth: $1 – $15
Diagonal red SPECIMEN ovpt front; all-zero s/n
Replacement: 1st prefix letter Z Unconfirmed
11 DE NOVEMBRO DE 1976 Sig 1: Mingas/Lilolwa Prefix AA - BA Intro: 08 01 1977
Worth: $1 – $18
Diagonal red SPECIMEN ovpt front; all-zero s/n
Replacement: 1st prefix letter Z. Unconfirmed
11 DE NOVEMBRO DE 1976 Sig 1: Mingas/Lilolwa Prefix AA - BR Intro: 08 01 1977
Worth: $1 – $15
Diagonal red SPECIMEN ovpt front; all-zero s/n
Replacement: 1st prefix letter Z Unconfirmed
11 DE NOVEMBRO DE 1976 Sig 1: Mingas/Lilolwa Prefix AA - AT Intro: 08 01 1977
Worth: $1 – $15
Diagonal red SPECIMEN ovpt front; all-zero s/n
Replacement: 1st prefix letter Z Unconfirmed
11 DE NOVEMBRO DE 1976 Sig 1: Mingas/Lilolwa Prefix AA - BG Intro: 08 01 1977
Diagonal red SPECIMEN ovpt front; all-zero s/n
Replacement: 1st prefix letter Z Unconfirmed
Greysheet News
Review Held for Dollars, Comic Art Coins and Medals
11/6/2026
![Greysheet Podcast: A Coin Dealer Who Buys Over 500,000 Silver Dollars a Year [Video]](https://images.greysheet.com/l/blogs/20261106/7da06212-52a0-4221-a1cc-7e9ca442662f.jpg)
Greysheet Podcast: A Coin Dealer Who Buys Over 500,000 Silver Dollars a Year [Video]
Greysheet Podcast Featuring John Feigenbaum, Hunter Hicks, and Stephen Yaffe
11/6/2026
Weekly World Mint Coinage: November 5, 2026
New coins from Austria, Hungary, and the United Kingdom.
11/5/2026
Events
Heritage Auctions: US Currency Tuesday Select Auction
Location: Heritage Auctions
Tuesday, September 1, 2026
Heritage Auctions: World Paper Money Tuesday Select Auction
Location: Heritage Auctions
Tuesday, September 1, 2026
Heritage Auctions: World & Ancient Coins ANA Signature Auction & Platinum Session
Location: Heritage Auctions
Tuesday, September 1, 2026