Hi, Marion. I have a couple of IBM 6x86 chips:
IBM26 6x86-2V2120GB (front)
Copyright USA 1995 Cyrix, + datecode on rear
I also have an IBM 6x86MX PR233 marked as "SAMPLE" (2.5x 75MHZ-2.9V CORE) and another with IBM26x86MX-AVAPR233GB 2.0x 83MHZ-2.9V CORE. And there's a final one with no markings at all on the front - probably a line test sample.
IBM26 6x86-2V2120GB (front)
Copyright USA 1995 Cyrix, + datecode on rear
I also have an IBM 6x86MX PR233 marked as "SAMPLE" (2.5x 75MHZ-2.9V CORE) and another with IBM26x86MX-AVAPR233GB 2.0x 83MHZ-2.9V CORE. And there's a final one with no markings at all on the front - probably a line test sample.