On September 1, Stack's Bowers conducted a Rarities Night session in California as part of this firm's post-ANA World's Fair of Money® auction extravaganza.
No AU50 photos on record yet — showing auction lots of this item in other grades
Coin Value History
1915 SC$1 Pan-Cal Expo, Official, Gilt, HK-428 AU50
1915 Panama-California Exposition, Official Medal, Gilt, HK-428, SH 19-1 GP, R.4, MS62 NGC. NGC Census: 28 in 62, 118 finer ...
MS62
NGC
$183
1915 Panama-California Exposition, Official Medal, Gilt, MS62 NGC. HK-428, SH 19-1 GP, R.4. NGC Census: 28 in 62, 118 finer ...
MS62
NGC
$207
1915 Panama-California Exposition, Official Medal, Gilt, HK-428, SH 19-1 GP, R.4, MS62 NGC. Census: 26 in 62, 112 finer (6/2...
MS62
NGC
$89
1915 Panama-California Exposition, Official Medal, Gilt, HK-428, SH 19-1 GP, R.4, MS62 NGC. ...
MS62
NGC
$45
1915 Panama-California Exposition, Official Medal, Gilt, HK-428, SH 19-1 GP, R.4, MS63 NGC. NGC Census: (55/62)....
MS63
NGC
$216
1915 Medal Panama-California Exposition, Official Medal, Gilt, HK-428, SH 19-1 GP, R.4, MS63 NGC. NGC Census: (52/61)....
MS63
NGC
$124
1915 Medal Panama-California Exposition, Official Medal, Gilt, HK-428, R.4, MS63 NGC. NGC Census: (51/57). PCGS Population:...
MS63
NGC
$149
1915 Panama-California Exposition. Official Medal. HK-428, SH 19-1 GP. Rarity-4. Gilt. MS-64 (PCGS).
MS64
PCGS
$244
1915 Panama-California Exposition. Official Medal. HK-428. Rarity-5. Gilt. MS-64 (PCGS).
MS64
PCGS
$240
1915 Medal HK-428 Panama-California Exposition MS64 NGC. NGC Census: (0/0). PCGS Population: (1/1). ...
MS64
NGC
$176
Greysheet News
Review Held for Dollars, Comic Art Coins and Medals
Commissioners reviewed reverse designs for the four American Innovation dollars scheduled to be released in 2028 and obverse and reverse designs for the 2027 issues in the Comic Art Coin and Medal Program.
11/6/2026
The Business of Numismatics: November 2026 Greysheet Editor's Letter
The rare coin market so far in 2026 has been somewhat volatile, with greater price swings happening over a shorter period of time when compared to historical norms.
11/4/2026
Events
Heritage Auctions: US Currency Tuesday Select Auction
Location: Heritage Auctions
Tuesday, September 1, 2026
Heritage Auctions: World Paper Money Tuesday Select Auction
Location: Heritage Auctions
Tuesday, September 1, 2026
Heritage Auctions: World & Ancient Coins ANA Signature Auction & Platinum Session
Location: Heritage Auctions
Tuesday, September 1, 2026





