Whitman Expo
His free weekly newsletter offers insights on the coin and metals markets, and consumer education.
Thank you to our sponsors!
Go check them out!
1921 Missouri half dollars mark the 100th anniversary of the Show-Me State's admission to the Union as the 24th state. The coins, designed by Robert Aitken, were issued in two different varieties: one with a numerical inscription 2*4 indicating Missouri's place as the 24th state and another without the marking; these are known as plain Missouri half dollars.
While it is unknown exactly how many 1921 Missouri 2*4 halves were distributed, but they are one of the rarest regular issues in the classic commemorative series. Most of the Missouri 2*4 half dollars are found in AU50 to MS64 grades, with MS65 rare and pieces grading MS66 or higher proving very rare.
Catalog Information
GSID:
10330
Designer:
Robert Aitken
Obverse Designer:
Robert Aitken
Reverse Designer:
Robert Aitken
Fineness:
0.9
Weight (gr):
12.5 gr
Weight (oz):
0.475 oz
Precious Metal Weight:
0.3617 oz
Strike Type:
Proof
Diameter:
30.6
Coin Shape:
Round
Edge:
Reeded
Variety:
Missouri 2x4
Coin Date:
1921
Denomination:
50c
Designation:
PR
Mint Location:
Philadelphia
Mintage:
1–2 Known
Coinage Type:
Classic Commemorative
Coinage Years:
1893-1954
Composition:
90% silver; 10% copper
PCGS #:
9332
Send Catalog Feedback
To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for 1921 50c Missouri 2x4 PR
Body: Referring page: http://livetest.greysheet.com/prices/item/1921-missouri-2x4-50c-silver-commemorative-proof/gsid/10330 GSID: 10330 Title: 1921 50c Missouri 2x4 PR
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 Pricing1893 25c Isabella PR
Worth: $2,900 – $55,000
1937 50c Boone, Matte PR
Worth: $75,000 – $90,000
1937-D 50c Boone, Matte PR
Worth: $60,000 – $72,000
1937-S 50c Boone, Matte PR
Worth: $55,000 – $66,000
1892 50c Columbian PR
Worth: $2,650 – $14,400
1893 50c Columbian PR
Worth: $23,000 – $27,600
1922 50c Grant with Star, Matte PR
Worth: $150,000 – $220,800
1922 50c Grant with Star SP
1928 50c Hawaiian PR
Worth: $23,000 – $132,000
1920 50c Maine SP
1938 50c New Rochelle SP
Worth: $3,000 – $7,800
1925 50c Fort Vancouver PR
Worth: $185,000 – $222,000
1903 G$1 Jefferson PR
Worth: $6,400 – $26,400
1903 G$1 McKinley PR
Worth: $6,000 – $21,600
1904 G$1 Lewis & Clark PR
Worth: $16,500 – $40,800
Greysheet News
Consumer Advocate Mike Fuljenz Wins NLG's Newsletter Award
9/15/2026
Incredible Rarities Shatter Records Amid Furious Bidding at Stack's Bowers Galleries' Summer 2026 Global Showcase Rarities Night Session
Stack's Bowers Galleries, one of the world's largest and most prestigious rare coin auction houses, is proud to announce record breaking results from the Rarities Night session of its annual Summer Global Showcase Auction.
9/15/2026
Five U.S. Coins Bring 7 Figures in $67 Million+ Heritage ANA Auctions
Scandinavian gold rarities also command exceptional results.
9/11/2026
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
