Intel R80286 8
I have a couple of these LGA68 286 CPU's at 8MHz and all of them a little bit different. For example this CPU is labeled SX123 just like this R80286 however the identification code is printed on a different row despite that both CPU's have been assembled in Malay. Usually assemblies from the same country have identical ways of printing/etching and assembling but apparently back in the day it varied somewhat.