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Stack's Bowers Galleries, legendary rare coin auction firm, is proud to announce that records were shattered in their September 3, 2026, offering of the Mack C. Chase Collection.
No AG3 photos on record yet — showing auction lots of this item in other grades
Coin Value History
1820 50c Square Base 2, No Knob, O-108 AG3
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1820 Capped Bust Half Dollar. O-108. Square Base No Knob 2, Large Date. EF Details--Cleaning (PCGS).
$480
1820 50C Square 2, Large Date, No Knob, O-108, R.2, Fine 12 PCGS. PCGS Population: (9/308)....
F12
PCGS
$159
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, Fine 12 NGC. NGC Census: (1/37). PCGS Population (1/24). ...
F12
NGC
$100
1820 Capped Bust Half Dollar. O-108. Rarity-2. Square Base No Knob 2, Large Date. VF-25 (NGC).
VF25
NGC
$258
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, VF30 NGC. CDN: $260 Whsle. Bid for NGC/PCGS VF30. Mintage 751,122....
VF30
NGC
$293
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2 -- Wire Brushed -- ANACS Details. VF30. ...
VF30
ANACS
$119
1820 Capped Bust Half Dollar. O-108. Rarity-2. Square Base No Knob 2, Large Date. VF-35 (NGC).
VF35
NGC
$360
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, VF35 NGC. NGC Census: (2/33). PCGS Population: (3/35). CDN: $340 W...
VF35
NGC
$456
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, XF40 PCGS. PCGS Population: 8 in 40, 30 finer (10/25). CDN: $425 W...
XF40
PCGS
$439
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, -- Corroded, Scratched -- ANACS. AU Details, Net XF40. ...
XF40
ANACS
$372
1820 50C Square 2, Large Date, No Knob, O-108, R.2, XF45 PCGS. CDN: $525 Whsle. Bid for NGC/PCGS XF45....
XF45
PCGS
$561
1820 50C Square Base 2, Large Date, Knob 2, O-108, R.2, AU55 PCGS. CAC. CDN: $1,800 Whsle. Bid for NGC/PCGS AU55....
AU55
PCGS
$2,575
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, AU55 NGC. Ex: Jules Reiver Collection. CDN: $1,550 Whsle. Bid for...
AU55
NGC
$1,560
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, XF45 NGC. NGC Census: (7/25)....
XF45
NGC
$840
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, AU53 PCGS....
AU53
PCGS
$1,800
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, MS63 PCGS. CAC....
MS63
PCGS
$12,000
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, AU50 ANACS....
AU50
ANACS
$504
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, AU53 PCGS. PCGS Population: (5/11 and 0/1+). NGC Census: (3/17 and...
AU53
PCGS
$1,080
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, -- Obverse Damage, Improperly Cleaned -- NCS. AU Details. ...
AU50
$420
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, MS63+ NGC. ...
MS63
NGC
$5,040
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, MS62 PCGS. ...
MS62
PCGS
$3,240
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, MS62 PCGS. ...
MS62
PCGS
$3,360
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, AU58 PCGS. ...
AU58
PCGS
$2,350
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, MS65 NGC. ...
MS65
NGC
$21,150
1820 Capped Bust Half Dollar. Overton-108. Rarity-2. Square Base No Knob 2, Large Date. Mint State-66+ (PCGS).
MS66
PCGS
$70,500
Greysheet News
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9/25/2026
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The Lipton Gallery is displaying a $3 million Augustus Saint-Gaudens statue that inspired the famous, similar design for Double Eagle gold coins.
9/24/2026
Consumer Advocate Mike Fuljenz Wins NLG's Newsletter Award
His free weekly newsletter offers insights on the coin and metals markets, and consumer education.
9/15/2026
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
