File:Motorola MC68882FN25A coprocessor.jpg

A 25MHz PLCC version of a Motorola 68882 floating-point unit (FPU), similar to one used in the Macintosh IIci.

Source

 * Motorola mc 68882 fn25 fpu 25 mhz processor by flam-elec, eBay. 2020-03-19.