Whitman Expo
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 G6 photos on record yet — showing auction lots of this item in other grades
Coin Value History
1820 50c Square Base 2, No Knob G6
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1820 Capped Bust Half Dollar. O-106. Rarity-1. Square Base No Knob 2, Large Date. VG-8 (PCGS).
VG8
PCGS
$192
1820 50c PCGS AG-03 (Square Base 2 Large Date No Knob)
AG3
PCGS
$400
1820 50C No Knob
VG10
$72
1820 50C Square 2, Large Date, No Knob, O-106, R.2, Fine 12 PCGS. CDN: $130 Whsle. Bid for NGC/PCGS Fine 12....
F12
PCGS
$268
1820 Capped Bust Half Dollar. O-106. Rarity-2. Square Base No Knob 2, Large Date. VF Details--Cleaned (PCGS).
$232
1820 Capped Bust Half Dollar. O-108. Rarity-2. Square Base No Knob 2, Large Date. AU Details--Cleaned (PCGS).
$720
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 No Knob 2, Large Date Fine 15 ANACS. O-106, R.1. The design elements have light silver color with medi...
F15
ANACS
$109
1820 50C Square Base 2, Large Date, No Knob, O-106, R.2 -- Cleaned -- ANACS Details. VF20. ...
VF20
ANACS
$139
1820 Capped Bust Half Dollar. O-108. Rarity-2. Square Base No Knob 2, Large Date. VF-25 (PCGS).
VF25
PCGS
$312
1820 50C Square 2, Large Date, No Knob, O-106, R.2, VF35 PCGS. CDN: $340 Whsle. Bid for NGC/PCGS VF35....
VF35
PCGS
$354
1820 50C Square Base 2, Large Date, No Knob, O-106, R.2, AU53 PCGS. PCGS Population: 5 in 53, 13 finer (10/25). CDN: $900 W...
AU53
PCGS
$1,098
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, XF40 PCGS. PCGS Population: 8 in 40, 30 finer (10/25). CDN: $425 W...
XF40
PCGS
$439
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-106, R.2, MS63 PCGS....
MS63
PCGS
$13,200
1820 50C Square Base 2, Large Date, No Knob, O-108, R.2, AU50 ANACS....
AU50
ANACS
$504
1820 Capped Bust Half Dollar. O-106. Rarity-2. Square Base No Knob 2, Large Date. MS-65 PL (NGC).
MS65
NGC
$66,000
1820 50C Square Base 2, Large Date, No Knob, O-106, R.2, AU58 PCGS....
AU58
PCGS
$3,360
1820 50C Square Base 2, Large Date, No Knob, O-106, R.2, MS61 NGC. ...
MS61
NGC
$3,030
50C 1820 LARGE DATE. SQUARE 2. NO KNOB. PCGS MS64
MS64
PCGS
$14,688
1820 50c Square Base 2, Large Date, No Knob, O-106, R.1, MS62 PCGS. ...
MS62
PCGS
$3,240
1820 50c Square Base 2, Large Date, No Knob, O-106, R.1, MS60 NGC. Gold CAC. ...
MS60
NGC
$6,462
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
Mack C. Chase Collection of Walking Liberty Half Dollars Realizes Nearly $2.5 Million in Stack's Bowers Galleries' 2026 Global Showcase Auction
9/25/2026
Kevin Lipton Opens Impressive Rare Coins, Fine Art & Antiques Gallery in Beverly Hills
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
