Whitman Expo
With the month of July and all the celebrations of Independence Day behind us, the rare coin market looks with anticipation to August.
Thank you to our sponsors!
Go check them out!
Obverse Description
Swahili text; denomination as registration device; coat of arms; plant; black rhinoceros
Reverse Description
English text; mining machinery; rough and cut diamonds; diamond-shaped Spark patch with giraffe head
Catalog Information
GSID:
139445
Variety:
Sig 17: Mpango/Luoga RollingStar windowed security thread Prefix HQ Intro: 02 04 2020
BNB #:
B142c
Send Catalog Feedback
To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for Sig 17: Mpango/Luoga RollingStar windowed security thread Prefix HQ Intro: 02 04 2020
Body: Referring page: http://beta.greysheet.com/prices/item/sig-17-mpango-luoga-rollingstar-windowed-security-thread-prefix-hq-intro-02-04-2020/gsid/139445 GSID: 139445 Title: Sig 17: Mpango/Luoga RollingStar windowed security thread Prefix HQ Intro: 02 04 2020
Subscribe to View
View more data, info, and visualizations. Get access to retail and wholesale pricing as well as auction data.
Pricing Data Not Yet Available
We are constantly adding to our pricing database and prioritize user requests. Click below to request pricing for this item.
Request Pricing No date Sig 1: Jamal/Mtei Prefix A - Z, AA - BL Intro: 14 06 1966
Diagonal red SPECIMEN ovpt front/back; all-zero s/n
Diagonal red SPECIMEN and DLR oval ovpts; horizontal red SPECIMEN NO # ovpt lower left front; all-zero s/n
Replacement: Prefix ZY, ZZ Unconfirmed
No date Sig 1: Jamal/Mtei Prefix A - Z, AA - BK Intro: 14 06 1966
Sig 2: Msuya/Mtei Prefix BL - CL
Sig 3: Msuya/Nyirabu Prefix CM - CR
Sig 4: Jamal/Nyirabu Prefix CS - DB
Sig 5: Mtei/Nyirabu Prefix DC - DL
Diagonal red SPECIMEN ovpt front/back; all-zero s/n
Diagonal red SPECIMEN and DLR oval ovpts; horizontal red SPECIMEN NO # ovpt lower left front; all-zero s/n
Diagonal red SPECIMEN and DLR oval ovpts; horizontal red SPECIMEN NO # ovpt lower left front; all-zero s/n
Replacement: Prefix ZY, ZZ Unconfirmed
No date Sig 1: Jamal/Mtei Prefix A - Z, AA - AX Intro: 14 06 1966
Sig 2: Msuya/Mtei Prefix BA - BM
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
Heritage Auctions: US Currency Tuesday Select Auction
Location: Heritage Auctions
Tuesday, June 2, 2026
Heritage Auctions: World Paper Money Tuesday Select Auction
Location: Heritage Auctions
Tuesday, June 2, 2026
Heritage Auctions: US Coins Tuesday & Wednesday Select Auction
Location: Heritage Auctions
Wednesday, June 3, 2026