Siemens SAB-C501G-1EP (87C52) 8-Bit CMOS Microcontroller. These are new old stock - they have never been used and are in original tubes. I have a total of 153 of these. THIS AUCTION IS FOR QUANTITY 3. 


Please see photos for additional details.


I have many other ICs listed here on eBay, and will be listing more over the next few weeks.