(I was told it was from an I/O card, presumably a Commodore A2232 serial port card for the Amiga computer? this one too?)
Label (top):
CSG 65CE02-4 2289 51 (M) (C) CBM 1987 88
Where:
Label (bottom):
PHILIPPINES IM214909 6300H
Approximate size: 4.3 x 3.6 mm
Text:
4502R1 (M) 1987 CBM