Question #15906. Asked by BB.
Last updated Aug 05 2021.
Slinkys® were first sold in Philadephia at a Gimbel’s Department Store in 1945. The Jameses took 400 of the toys, each made of 63 feet (19.2 m) of wire curved into 98 stacked coils. and had sold them all within an hour and a half. By the early twentieth century, over 300,000,000 Slinkys® had been sold around the world.
https://www.wise-geek.com/what-is-a-slinky.htm https://www.smithsonianmag.com/innovation/accidental-invention-slinky-180973016