American Innovation 2020 $1 Reverse Proof Coin - Massachusetts
We are currently out of this item, but it may be restocked later. Be alerted when this product is back in stock.
Mintage Limit is the total number of a coin manufactured across all products. (For example, a coin may be available in rolls and in our annual sets).
Product Limit is the number of a coin made available in the individual product.
Household Order Limit In cases where we have limited-mintage products (e.g., legislatively mandated or Mint established production or mintage limits), the United States Mint may impose order or household order limits. Order limits help us ensure that we provide fair purchase opportunities to the broadest audience possible. As we monitor our products, limits may be implemented, adjusted, or removed at our discretion.
The United States Mint American Innovation $1 Coin Program is a multi-year series to honor innovation and innovators with $1 coins from each State, District of Columbia, Puerto Rico, Guam, American Samoa, U.S. Virgin Islands, and Northern Mariana Islands.
The United States Mint is proud to celebrate innovation and honor the spirit of America with the 2020 American Innovation $1 Reverse Proof Coin from the State of Massachusetts — the second release of 2020.
On March 7, 1876, Alexander Graham Bell—scientist, inventor, and innovator— received the first patent for an “apparatus for transmitting vocal or other sounds telegraphically,” a device he called the “tele-phone.” Three days after his patent was issued, Bell and his assistant, Thomas Watson, made the first successfully transmitted message. Pressing the receiver against his ear, Watson heard Bell’s message: “Mr. Watson, come here, I want to see you.”
Bell’s large box telephone was one of two he used in a demonstration conducted between Boston and Salem, Mass., on November 26, 1876. It featured an iron diaphragm, two electromagnets, and a horseshoe permanent magnet. When used as a transmitter, sound waves at the mouthpiece caused the diaphragm to move, inducing a fluctuating current in the electromagnets. This current was conducted over wires to a similar instrument acting as a receiver. There, the fluctuating current in the electromagnets caused the diaphragm to move, producing air vibrations that could be heard.
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.
This reverse (tails) design depicts the dial of an early rotary dial telephone. The inscriptions are “MASSACHUSETTS,” “TELE-PHONE,” and “UNITED STATES OF AMERICA.”
The edge-incused inscriptions are “2020,” “S” mint mark, and “E PLURIBUS UNUM.”
| Denomination: | $1 Coin |
|---|---|
| Finish: | Reverse Proof |
| Composition: | 6% Zinc, 3.5% Manganese, 2% Nickel, Balance Copper |
| Weight: | 8.100 grams |
| Diameter: | 1.043 inches (26.49 mm) |
| Edge: | Lettered |
| Mint and Mint Mark: | San Francisco – S |
We are currently out of this item, but it may be restocked later. Be alerted when this product is back in stock.
Mintage Limit is the total number of a coin manufactured across all products. (For example, a coin may be available in rolls and in our annual sets).
Product Limit is the number of a coin made available in the individual product.
Household Order Limit In cases where we have limited-mintage products (e.g., legislatively mandated or Mint established production or mintage limits), the United States Mint may impose order or household order limits. Order limits help us ensure that we provide fair purchase opportunities to the broadest audience possible. As we monitor our products, limits may be implemented, adjusted, or removed at our discretion.