Toshiba TMP68HC000t-12 PLCC processor 12mhz (5 pieces). These were made by Toshiba as well as Motorola and will work in place of them as they are the same part.  This is a 12mhz part and can be used with 12mhz and below applications.  It is also the HC version which was made later and runs cooler, it can also be used in place of non HC versions like the MC68000FN.  The HC version is really the one to have since its cooler running and uses less power.  These are all in my stock here in the USA.  These are working, unused parts still in their factory tubes.  We do not sell Chinese counterfeit junk.