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 AU53 photos on record yet — showing auction lots of this item in other grades
Coin Value History
1828 50c Curl Base 2, Knob, O-107 AU53 CAC
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1828 50C Curl Base 2, Knob, O-107, R.1, AU55 NGC. NGC Census: (3/11). PCGS Population: (2/9). AU55. From The Founding...
AU55
NGC
$840
1828 50C Curl Base 2, Knob, O-107, R.2, AU55 PCGS. PCGS Population: (3/8). NGC Census: (2/11). AU55. From A Small Cal...
AU55
PCGS
$552
1828 50C Curl Base 2, Knob, O-107, R.2, AU55 PCGS. CAC. PCGS Population: (3/7). NGC Census: (2/10). AU55. ...
AU55
PCGS
$720
1828 50C Curl Base 2, Knob, O-107, R.2, AU50 PCGS. PCGS Population: (4/13). NGC Census: (3/15). AU50. ...
AU50
PCGS
$432
1828 50C Curl Base 2, Knob, O-107, R.1, AU58 PCGS....
AU58
PCGS
$1,560
1828 50C Curl Base 2, Knob, O-107, R.2, AU58 PCGS. ...
AU58
PCGS
$1,320
1828 50C Curl Base 2, Knob, O-107, R.2, AU58 NGC. NGC Census: (3/6). PCGS Population: (2/5). CDN: $825 Whsle. Bid for probl...
AU58
NGC
$852
1828 50C Curl Base 2, Knob, O-107, R.2, XF45 PCGS. PCGS Population: (1/18). NGC Census: (3/19). XF45. From The S. R. Coll...
XF45
PCGS
$228
1828 50C Curl Base 2, Knob, O-107, R.2, MS61 PCGS. ...
MS61
PCGS
$2,115
1828 50C Curl Base 2, Knob, O-107, R.2, XF45 NGC. Ex: The Skidaway Island Collection. NGC Census: (0/0). PCGS Populatio...
XF45
NGC
$282
1828 50C Curl Base 2, Knob, O-107, R.1, Fine 12 PCGS. Ex: Manhattan Collection. CDN: $98 Whsle. Bid for NGC/PCGS Fine 12. ...
F12
PCGS
$149
1828 50C Curl Base 2, Knob, O-107, R.1, Fine 15 PCGS. CDN: $115 Whsle. Bid for NGC/PCGS Fine 15. ...
F15
PCGS
$149
1828 50C Curl Base 2, Knob, O-107, R.1, VF35 PCGS. Ex: Manhattan Collection. CDN: $230 Whsle. Bid for NGC/PCGS VF35. ...
VF35
PCGS
$355
1828 50C Curl Base 2, Knob, O-107, R.1, VF35 PCGS. ...
VF35
PCGS
$415
1828 50C Curl Base 2, Knob, O-107, R.1, VF35 PCGS. Ex: Manhattan Collection. PCGS Population: 2 in 35, 26 finer (11/25). CD...
VF35
PCGS
$396
1828 50C Curl Base 2, Knob, O-107, R.1, MS64 PCGS. CAC....
MS64
PCGS
$7,200
1828 50C Curl Base 2, Knob, O-107, R.1, MS65 PCGS. Ex: Friend. One of only two Curl 2, Knob varieties, the other (O-106) ha...
MS65
PCGS
$9,600
1828 50C Curl Base 2, Knob, O-107, R.1, MS62 PCGS. ...
MS62
PCGS
$3,000
1828 Capped Bust Half Dollar. O-107. Rarity-2. Curl Base Knob 2. AU Details--Cleaned (PCGS).
$312
1828 50C Curl Base 2, Knob, O-107, R.2, MS65 PCGS. ...
MS65
PCGS
$11,400
1828 50C Curl Base 2, Knob, O-107, R.2, MS63 PCGS. ...
MS63
PCGS
$3,360
1828 50C Curl Base 2, Knob, O-107, R.2, -- Cleaning -- PCGS Genuine. From The Donald R. Frederick Collection of Early U....
$153
1828 50C Curl Base 2, Knob, O-107, R.2, MS63 PCGS. ...
MS63
PCGS
$3,760
1828 50C Curl Base 2, Knob, O-107, R.2, MS63 NGC. ...
MS63
NGC
$2,350
1828 50C Curl Base 2, Knob, O-107, R.2, -- Cleaned -- ANACS. XF45 Details. NGC Census: (0/0). PCGS Population (1/12)....
XF45
ANACS
$141
Greysheet News
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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
