We now have the first prices realized dataset for the immense Stack's Bowers Global Showcase auction, and it reveals a market that is moving in two directions at the same time.
Société Générale (General Company) Currency & Banknote Values
Banknote Book® Price Guide
The Greysheet Catalog (GSID) of the Société Générale (General Company) series of Belgium in the World Currency contains 28 distinct entries with CPG® values between $2.50 and $3,500.00.
On 16 December 1822, the Société Générale pour favoriser l’industrie nationale (General Company for the Promotion of National Industry) was established in Brussels and acquired a de facto issuing monopoly in southern Netherlands, while the Nederlandsche Bank dominated in the north. In 1823, the Société Générale (GEN), as the company was known familiarly, was appointed the state cashier by King William I of the Netherlands.
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Société Générale (General Company)
Banque de Belgique (Bank of Belgium)
Banque Liégeoise et Caisse d’Éspargnes (Liège Bank and Savings)
Banque de Flandre (Bank of Flanders)
Banque Nationale de Belgique (National Bank of Belgium)
Banque d’Emission à Bruxelles (Bank of Issue in Brussels)
Royaume de Belgique Trésorerie (Kingdom of Belgium Treasury)
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$4.00 - $60.00
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Greysheet News
Stack's Bowers Galleries' Summer 2026 Global Showcase Auction Realizes Over $70 Million
Results Set Record for the Firm's Highest Grossing Auction Sale in its 90+ Year History.
10/7/2026
The Business of Numismatics: October 2026 Greysheet Editor's Letter
While reviewing the initial results in various categories of recent auctions, my initial take is that the sales were moderate to strong.
10/6/2026
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