1 Dollar (American Innovation - Connecticut) 2020 front 1 Dollar (American Innovation - Connecticut) 2020 back
1 Dollar (American Innovation - Connecticut) 2020 photo
© Image courtesy of the United States Mint

1 Dollar American Innovation - Connecticut

2020 year
Manganese brass clad copper 8.1 g 26.49 mm
Description
Issuer
United States
Period
Federal republic (1776-date)
Type
Non-circulating coin
Year
2020
Value
1 Dollar (1&nbspUSD)
Currency
Dollar (1785-date)
Composition
Manganese brass clad copper
Weight
8.1 g
Diameter
26.49 mm
Thickness
2.00 mm
Shape
Round
Technique
Milled
Orientation
Coin alignment ↑↓
Updated
2024-10-09
References
Numista
N#225134
Rarity index
16%

Reverse

This reverse design depicts the Gerber Variable Scale being used to increase a geometric shape by 200 percent, a shape which resembles the State of Connecticut.

Script: Latin

Lettering:
UNITED STATES OF AMERICA
GERBER VARIABLE SCALE
CONNECTICUT

Engraver: Renata Gordon

Designer: Richard Masters

Edge

The year of minting (2020), mintmark, and inscription “E PLURIBUS UNUM” are incused on the edge of the coins.

Lettering: 2020 P E PLURIBUS UNUM

Comment

Before the invention of the graphing calculator, scientists needed a clear, quick, and simple solution to understand and solve problems of scale. The invention of the Gerber Variable Scale was that solution.

Heinz Joseph Gerber (1924–1996) invented the device while studying aeronautical engineering at Rensselaer Polytechnic Institute in 1945, a few years after escaping Nazi-controlled Austria with his mother. The earliest version of the variable scale had been fashioned from an elastic band removed from a pair of pajamas. Gerber created a rubber rule and scale that could flow with a curve, expand, contract, and turn a corner. It allowed for the direct numerical reading of curves, graphs, and graphical representations.

Because of its ease of use and quick solutions, the Gerber Variable Scale was a huge success, and by the 1950s, it was considered the universally accepted tool for engineers and architects all over the world.

Interesting fact

The Manganese brass clad copper coin is resistant to corrosion and has a longer shelf life than other metals.

Price

Date Mintage VG F VF XF AU UNC
2020 D - - - - - -
2020 P - - - - - -
2020 S 50000 - - - - - -

Values in the table are based on evaluations by sales realized on Internet platforms. They serve as an indication only for 1 Dollar (American Innovation - Connecticut) 2020 coin.