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As America celebrates its 250th anniversary, Robert L. Rodriguez combines cutting-edge science, numismatic research, and detective work to uncover new evidence about one of the nation's most enigmatic artifacts.
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The Connecticut $1 coin recognizes the Gerber Variable Scale. The design depicts the scale being used to increase a geometric shape by 200 percent, a shape that resembles the state of Connecticut. Inscriptions are UNITED STATES OF AMERICA, GERBER VARIABLE SCALE, and CONNECTICUT.
Obverse Description
The obverse (heads) design features a dramatic representation of the Statue of Liberty in profile with the inscriptions "IN GOD WE TRUST" and "$1." The obverse also includes a privy mark of a stylized gear, representing industry and innovation.
Catalog Information
GSID:
82157
Designer:
Richard Masters
Obverse Designer:
Richard Masters
Weight (gr):
8.1 gr
Weight (oz):
0.2857 oz
Strike Type:
Proof
Diameter:
26.49
Coin Shape:
Round
Edge:
Lettered
Variety:
CT-Gerber Scale
Variety 2:
Reverse Proof
Coin Date:
2020-S
Denomination:
$1
Designation:
PR
Mint Location:
San Francisco
Mint Mark:
S
Mintage:
48,470
Coinage Type:
American Innovation dollar
Coinage Years:
2018-2032
Composition:
6% Zinc, 3.5% Manganese, 2% Nickel, Balance Copper
PCGS #:
826055
Send Catalog Feedback
Subject: I would like to contribute catalog info to CDN for 2020-S $1 CT-Gerber Scale, Reverse Proof PR
Body: Referring page: http://www.greysheet.com/prices/item/2020-s-reverse-proof-one-dollar-american-innovation-connecticuty-gerber-variable-scale/gsid/82157 GSID: 82157 Title: 2020-S $1 CT-Gerber Scale, Reverse Proof PR
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Coin Value History
2020-S $1 CT-Gerber Scale, Reverse Proof PR
Value By Grade
2020-S $1 CT-Gerber Scale, Reverse Proof PR
CPG (retail) values
Currency
Grade Range
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Pricing
Values
Greysheet & CPG® Values
| Grade | CPG Value (Retail) | Greysheet Price (Wholesale) |
|---|---|---|
| OGP* | $11.00 | $1,234 |
| PR70 | $27.00 | $1,234 |
| PR69 | $1,234 | $1,234 |
| PR68 | $1,234 | $1,234 |
| PR67 | $1,234 | $1,234 |
| PR66 | $1,234 | $1,234 |
| PR65 | $1,234 | $1,234 |
| PR64 | $1,234 | $1,234 |
| PR63 | $1,234 | $1,234 |
| PR62 | $1,234 | $1,234 |
| PR61 | $1,234 | $1,234 |
| PR60 | $1,234 | $1,234 |
American Innovation $1 PR DCAM [Type]
Worth: $5 – $18
2018-S $1 WA-Signed 1st Patent PR DCAM
Worth: $9 – $22
2018-S $1 WA-Signed 1st Patent, Reverse Proof PR
Worth: $12 – $25
2019-S $1 DE-Cannon-Classifying Stars PR DCAM
Worth: $5 – $18
2019-S $1 DE-Cannon-Classifying Stars, Reverse Proof PR
Worth: $7 – $20
2019-S $1 PA-Polio Vaccine PR DCAM
Worth: $5 – $18
2019-S $1 PA-Polio Vaccine, Reverse Proof PR
Worth: $7 – $20
2019-S $1 NJ-Edison Light Bulb PR DCAM
Worth: $5 – $18
2019-S $1 NJ-Edison Light Bulb, Reverse Proof PR
Worth: $7 – $20
2019-S $1 GA-Trustees Garden PR DCAM
Worth: $5 – $18
2019-S $1 GA-Trustees Garden, Reverse Proof PR
Worth: $7 – $20
2020-S $1 CT-Gerber Scale PR DCAM
Worth: $5 – $18
2020-S $1 MA-Telephone PR DCAM
Worth: $5 – $18
2020-S $1 MA-Telephone, Reverse Proof PR
Worth: $7 – $20
2020-S $1 MD-Hubble Telescope PR DCAM
Worth: $5 – $18
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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