Description: 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 Bellscientist, 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 Bells message: Mr. Watson, come here, I want to see you. Bells 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.
Price: 19 USD
Location: Towson, Maryland
End Time: 2024-12-09T19:03:55.000Z
Shipping Cost: 5 USD
Product Images
Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Denomination: $1
Circulated/Uncirculated: Uncirculated
Year: 2020
Strike Type: Proof
Mint Location: West Point
Grade: Ungraded
Country/Region of Manufacture: United States
Certification: U.S. Mint
