Whitman Expo
On September 1, Stack's Bowers conducted a Rarities Night session in California as part of this firm's post-ANA World's Fair of Money® auction extravaganza.
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Obverse Description
French text; lion faces in corners
Reverse Description
French text; ornate border; black oval stamp BANQUE DE LA GUYANE CAYENNE with serial number
Catalog Information
GSID:
102622
Variety:
Sig Buy (handwritten)/Constantin (35 mm)
BNB #:
B212d
Pick #:
P11
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Subject: I would like to contribute catalog info to CDN for Sig Buy (handwritten)/Constantin (35 mm)
Body: Referring page: http://www.greysheet.com/prices/item/sig-buy-handwritten-constantin-35-mm-b212d-102622-world-paper-money-values/gsid/102622 GSID: 102622 Title: Sig Buy (handwritten)/Constantin (35 mm)
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Bank Note Value History
Sig Buy (handwritten)/Constantin (35 mm)
Value By Grade
Sig Buy (handwritten)/Constantin (35 mm)
Banknote Book values
Currency
Grade Range
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Pricing
Values
Banknote Book (CPG) Values
1901 (in law panel lower back) Sig Ravel/Briais Intro: 1911
Sig A Darredeau/Briais Intro: 1914
Sig Rollet/Briais Intro: 1919
Sig Poulet/Briais Intro: 1922
Sig Michel/Briais Intro: 1930
Sig Vivien (handwritten)/Briais Intro: 1932
Sig Lamer/Briais Intro: 1933
Worth: $90 – $275
Sig Halleguen/Briais Intro: 1939
Worth: $50 – $50
Sig Halleguen/Constantin (55 mm) Intro: 1942
Worth: $35 – $100
Sig Halleguen/Constantin (35 mm) Intro: 1944
Sig Buy/Constantin (35 mm) Intro: 1946
Worth: $60 – $500
Uniface; no sig ; no ovpt; s/n W 24 000
No date Sig Eggimann/Prud’homme/Barouche Intro: 1890
No sig ; no ovpt; no s/n
No date Sig Vivien/Briais/Unknown Intro: 1909
Greysheet News
1796 Coin in Post-ANA Auction Rarities Session
11/9/2026
Review Held for Dollars, Comic Art Coins and Medals
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.
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
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