Whitman Expo
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.
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Obverse Description
Thai text; Royal Garuda emblem; Royal Initial Emblem of H M the King “Phor Por Ror;” Bhumibol Adulyadej (Rama IX) wearing uniform
Reverse Description
Thai text; King’s monogram; King Chulalongkorn abolishing slavery; King Chulalongkorn wearing naval uniform; Royal Garuda emblem
Catalog Information
GSID:
139916
Variety:
Sig 81
BNB #:
B175f
Pick #:
P114
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Subject: I would like to contribute catalog info to CDN for Sig 81
Body: Referring page: http://www.greysheet.com/prices/item/sig-81-b175f-139916-world-paper-money-values/gsid/139916 GSID: 139916 Title: Sig 81
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Bank Note Value History
Sig 81
Currency
Grade Range
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Pricing
Values
Banknote Book (CPG) Values
No date Sig 16 Prefix C/1 - D/50 Thai digits in right s/n; variable weight font Intro: 07 03 1940
Worth: $6 – $100
Sig 23 Prefix D/51 - D/62 Western digits in both s/n; monoweight font Intro: 22 05 1946
Worth: $6 – $100
Diagonal red DLR oval ovpt front; horizontal red SPECIMEN No # ovpt lower left front; no sig ; all-zero s/n
No date Sig 16 Prefix K/26 - K/27 Intro: 07 03 1940
Horizontal purple SPECIMEN ovpt front; no sig ; no s/n
No date Sig 16 Prefix N/16 - N/39 Intro: 07 03 1940
Worth: $40 – $150
Sig 23 Prefix N/48 - N/55
Worth: $40 – $150
No date Sig 16 s/n T/1 20001 - T/1 40000 Intro: 07 03 1940
Worth: $800 – $3,400
Diagonal black DLR oval ovpt front; horizontal black SPECIMEN No # ovpt lower left front; all-zero s/n
No date Sig 17 Thai digits in right s/n Prefix A/1 - A/40 Intro: 24 06 1942
Worth: $30 – $450
Western digits in both s/n Prefix A/41 - C/28
Worth: $30 – $450
Sig 19 Prefix C/29 - C/32
Worth: $30 – $450
Sig 20 Prefix C/33
Worth: $30 – $450
No ovpt; no perf; all-zero s/n
No date Sig 17 Wmk: Constitution on phan (decorated tray with pedestal) Prefix N/1 - N/50 Intro: 24 05 1943
Worth: $60 – $1,200
Greysheet News
October 2026 Greensheet Market Analysis: Collector Grade Notes Strong
10/7/2026
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
Events
Knoxville Coin and Currency Show - TN
Location: Rothchild Catering & Conference Center
Saturday, August 1, 2026
