If they are matchboxed sized, they might be from a GRiDPad...
At 01:04 AM 7/30/98 -0500, you wrote:
I didn't
notice a ring. They were cigarette size boxs and marked "Grid
120" and had a connector at one end.
Those sound like the removable hard drives from my GRiD 1810, one of the
made-in-Japan plastic GRiDs.