Whitman Expo
Greysheet Podcast featuring John Feigenbaum and Ian Russell
Thank you to our sponsors!
Go check them out!
Obverse Description
Spanish text; Constitution and quill in inkwell; Francisco de Paula Santander; shield registration device
Reverse Description
Spanish text; shield; Liberty head bank seal; Casa de Moneda (mint) courtyard with fountain in Bogotá; screw press for minting coins
Catalog Information
GSID:
94752
Variety:
20 DE JULIO DE 1981 Sig 13: Gamma/Ortega Solid yellow security thread Printer: THOMAS DE LA RUE AND COMPANY LIMITED 8- or 9-digit s/n
BNB #:
B968a
Pick #:
P423a
Send Catalog Feedback
To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for 20 DE JULIO DE 1981 Sig 13: Gamma/Ortega Solid yellow security thread Printer: THOMAS DE LA RUE AND COMPANY LIMITED 8- or 9-digit s/n
Body: Referring page: http://livetest.greysheet.com/prices/item/20-de-julio-de-1981-sig-13-gamma-ortega-solid-yellow-security-thread-printer-thomas-de-la-rue-and-company-limited-8-or-9-digit-s-n/gsid/94752 GSID: 94752 Title: 20 DE JULIO DE 1981 Sig 13: Gamma/Ortega Solid yellow security thread Printer: THOMAS DE LA RUE AND COMPANY LIMITED 8- or 9-digit s/n
Subscribe to View
View more data, info, and visualizations. Get access to retail and wholesale pricing as well as auction data.
Bank Note Value History
20 DE JULIO DE 1981 Sig 13: Gamma/Ortega Solid yellow security thread Printer: THOMAS DE LA RUE AND COMPANY LIMITED 8- or 9-digit s/n
Value By Grade
20 DE JULIO DE 1981 Sig 13: Gamma/Ortega Solid yellow security thread Printer: THOMAS DE LA RUE AND COMPANY LIMITED 8- or 9-digit s/n
Banknote Book values
Currency
Grade Range
Sort by
Pricing
Values
Banknote Book (CPG) Values
PRIMERO DE MAYO DE 1920 6- or 7-digit s/n Intro: 1923
Worth: $3,500 – $7,000
QUINCE DE SEPTIEMBRE DE 1919 6-digit s/n Intro: 1923
Worth: $17,000 – $33,500
QUINCE DE SEPTIEMBRE DE 1919 6-digit s/n Intro: 1923
QUINCE DE SEPTIEMBRE DE 1919 6-digit s/n Intro: 1923
20 DE JULIO DE 1923 Sig 1: Joaquín/Michelsen/Posada Series A 7- or 8-digit s/n
Worth: $130 – $500
Separate uniface front/back; no ovpt; no perf; all-zero s/n
Separate uniface front/back; no ovpt; no perf; no s/n
Two diagonal red SPECIMEN ovpt front; all-zero s/n
20 DE JULIO DE 1923 Sig 1: Joaquín/Michelsen/Posada Series B 7-digit s/n
Worth: $200 – $2,700
Separate uniface front/back; no ovpt; no perf; all-zero s/n
Separate uniface front/back; no ovpt; no perf; no s/n
Two diagonal red SPECIMEN ovpt front; all-zero s/n
20 DE JULIO DE 1923 Sig 1: Joaquín/Michelsen/Posada Series C 7-digit s/n
Worth: $400 – $1,700
Separate uniface front/back; no ovpt; no perf; all-zero s/n
Separate uniface front/back; no ovpt; no perf; no s/n
Greysheet News
![Greysheet Podcast: RARE COIN MARKET EXPLODING! Ian Russell Reveals the Coins Collectors Are Buying NOW [Video]](https://images.greysheet.com/l/blogs/20260918/1dc72704-e5bd-44bf-ad3d-7f11027ec440.jpg)
Greysheet Podcast: RARE COIN MARKET EXPLODING! Ian Russell Reveals the Coins Collectors Are Buying NOW [Video]
9/18/2026
Carthage Gold Stater Leads Heritage's LII Collection Ancient Coins Auction to $823,683
Heritage's Sept. 8 Ancient Coins Showcase Auction achieves 100% sell-through rate as Greek, Ptolemaic, Macedonian and Judaean rarities deliver strong results.
9/17/2026
Events
Heritage Auctions: US Coins Tuesday & Wednesday Select Auction
Location: Heritage Auctions
Wednesday, July 1, 2026
Heritage Auctions: World & Ancient Coins Wednesday & Thursday Select Auction
Location: Heritage Auctions
Thursday, July 2, 2026
