I just checked my two KIMs for dates. Here's what I have: Board#1: Labeled "Rev. A", oldest chip date 5276 (Dec 76); white numbers on back "2788". The 6502 is a white ceramic DIP with a "3776" date code. Board#2: Labeled "Rev. B", oldest chip date 4276 (Oct 76); white numbers on back "5895". The 6502 is a white ceramic DIP with a "3776" date code. Small tag says that the 6502 has been replaced. [ Rich Cini/WUGNET [ ClubWin!/CW7 [ MCP Windows 95/Windows Networking [ Collector of "classic" computers [ http://highgate.comm.sfu.ca/~rcini/classiccmp/ [ http://highgate.comm.sfu.ca/~rcini/pdp11/ <================ reply separator =================>