You're right, it's from the 1080.
"Before the rainbow check mark was chosen as the official logo for the Commodore Amiga, Commodore produced a batch of Boing Ball logo plates that would be attached to the front of the A1000 computer, 1080 Monitors, 1010 Disk Drives, 5.25" disk drives, and A1000 Keyboards. However, the company abandoned this logo, chosing the familiar rainbow check mark. The Boing ball was quickly adopted as the unofficial logo for Amiga enthusiasts everywhere.
The plate is made of metal with a plastic lamination layer, and is covered with a die-cut piece of waxed paper, as originally manufactured by Commodore in 1985.. The silvery metal squares which checkerboard on the ball with the red squares were made with a diamond-cut process, so they reflect and shimmer when you move the logoplate around in the light."
http://www.amigahistory.co.uk/rareitem.htmlAaah well...