Whitman Expo
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Obverse Description
Bilingual text with Afrikaans predominating over English; Jan van Riebeeck; high-voltage transmission tower
Reverse Description
Sasol refinery with liquefied natural gas spheres; cog wheel, chemistry retort, and smelting ladle
Catalog Information
GSID:
135127
Variety:
Sig 6: de Kock Prefix A3/# - A4/# Intro: 1981
BNB #:
B747b
Pick #:
P118
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To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for Sig 6: de Kock Prefix A3/ - A4/ Intro: 1981
Body: Referring page: http://beta.greysheet.com/prices/item/sig-6-de-kock-prefix-a3-a4-intro-1981/gsid/135127 GSID: 135127 Title: Sig 6: de Kock Prefix A3/# - A4/# Intro: 1981
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Bank Note Value History
Sig 6: de Kock Prefix A3/# - A4/# Intro: 1981
Value By Grade
Sig 6: de Kock Prefix A3/# - A4/# Intro: 1981
Banknote Book values
Currency
Grade Range
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Pricing
Values
Banknote Book (CPG) Values
30 November 1921 - 31 January 1922 Sig 1: Clegg Prefix E/1 - E/3
Worth: $1,200 – $1,200
Horizontal CANCELLED perf; s/n range
30 November 1921 - 31 January 1922 Sig 1: Clegg Prefix E/1 - E/3
Worth: $1,200 – $1,200
17 September 1921 - 5 July 1922 Sig 1: Clegg Prefix A/1 - A/12
27 September 1921 - 6 July 1922 Sig 1: Clegg Prefix B/1 - B/3
Worth: $500 – $1,500
Diagonal black SPECIMEN ovpt front/back; all-zero s/n
29 September 1921 Sig 1: Clegg Prefix C/1 (C/2 unissued)
30 September 1921 Sig 1: Clegg Prefix D/1 (D/2 unissued)
Diagonal black SPECIMEN ovpt front/back; all-zero s/n
20 September 1926 - 15 December 1926 Sig 1: Clegg Prefix E/4 - E/6
Two diagonal black SPECIMEN ovpts front; no s/n
1 September 1925 - 4 April 1928 Sig 1: Clegg Prefix A/13 - A/17
Worth: $375 – $375
7 April 1926 Sig 1: Clegg Prefix B/4
1 September 1928 - 9 September 1931 Sig 1: Clegg Prefix E/7 - E/11
Worth: $325 – $325
2 April, 1932 with 17 November, 1931 ovpt Prefix E/12
Worth: $325 – $325
Greysheet News
The Business of Numismatics: August 2026 Greysheet Editor's Letter
8/7/2026
Stack's Bowers Galleries Presents the Extraordinary Mack C. Chase Collection of Walking Liberty Half Dollars in the 2026 Global Showcase Auction
"These coins have been off the market for at least 10-15 years, and many of them are in older generation grading holders as well, adding to the excitement," comments John M. Pack.
8/7/2026
Events
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Wednesday, June 3, 2026