Whitman Expo
Demand for early copper and Colonial-era numismatic treasures drives strong results in Heritage Auctions' July 13 Early Copper & Colonial U.S. Coins Showcase Auction
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The 1878 Twenty Cent Piece is a proof-only issue in this extremely short series that is highly desired by collectors. It has the second lowest mintage in the series at just 600. The date is scarce from the circulated grades all the way through PR66. The value escalates at a gradual pace up until the finest known grade of PR67, which is rare. The auction record for this date is a CAC approved NGC graded PR65, which brought $24,725 at a Stack's Bowers auction in 2011. As cameo and deep cameo pieces go there is an expected, yet subtle, premium. Only 133 have a Cameo designation from PCGS and NGC and only 5 exist in Deep Cameo. Deep Cameos are very rare across all Twenty Cent dates.
Obverse Description
Lady Liberty is seated on a rock, holding a staff, and bearing a shield with the word LIBERTY on a flowing ribbon. 13 stars have adorn the periphery and the date appears at the bottom center.
Reverse Description
An eagle is prominently featured with the words UNITED STATES OF AMERICA * TWENTY CENTS around the periphery.
Catalog Information
GSID:
5053
Designer:
William Barber
Obverse Designer:
William Barber
Obverse Lettering:
LIBERTY, 1878
Reverse Designer:
William Barber
Reverse Lettering:
UNITED STATES OF AMERICA, TWENTY CENTS
Fineness:
0.9
Weight (gr):
5 gr
Weight (oz):
0.1608 oz
Precious Metal Weight:
0.1447 oz
Strike Type:
Proof
Diameter:
22
Coin Shape:
Round
Edge:
Plain
Coin Date:
1878
Denomination:
20c
Designation:
PR
Mint Location:
Philadelphia
Mintage:
600
Coinage Type:
Seated Liberty twenty cent piece
Coinage Years:
1875-1878
Composition:
90% silver; 10% copper
PCGS #:
95306
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Coin Value History
1878 20c PR DCAM
Value By Grade
1878 20c PR DCAM
CPG (retail) values
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Values
Greysheet & CPG® Values
Twenty-Cent Piece 20c Seated Liberty, 1875-1878 PR [Type]
Worth: $750 – $40,000
1875 20c PR
Worth: $750 – $24,000
1875-S 20c PR BM
Worth: $12,500 – $36,000
1876 20c PR
Worth: $750 – $40,000
1877 20c PR
Worth: $2,000 – $26,400
1878 20c PR
Worth: $1,400 – $26,400
Twenty-Cent Piece Set 20c Seated Liberty, 4 Coins PR
Worth: $6,850 – $100,800
Greysheet News
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Best of the Mint Program Kicks Off
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7/13/2026
Events
Midlands Coin Club Coin, Currency and Collectibles Show - SC
Location: Medallion Center
Friday, May 1, 2026
