Whitman Expo
Greysheet Podcast featuring John Feigenbaum and Ian Russell
Thank you to our sponsors!
Go check them out!
Obverse Description
Thai text; Royal Garuda emblem; Bhumibol Adulyadej (Rama IX) in the Royal House of Chakri gown
Reverse Description
Thai text; Royal Garuda emblem; King Taksin the Great
Catalog Information
GSID:
139962
Variety:
Sig 86
BNB #:
B183b
Pick #:
P120
Send Catalog Feedback
To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for Sig 86
Body: Referring page: http://livetest.greysheet.com/prices/item/sig-86/gsid/139962 GSID: 139962 Title: Sig 86
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
Sig 86
Currency
Grade Range
Sort by
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
![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
