Here is a very unusual Engineering Sample from Intel. These were manufactured in 1996 with a 1994 copyright date. They are slightly smaller then a Socket 5 Pentium and are a 325 pin SPGA package.
Marked KJ8TSMR00-BA the best guess so far is a early P6 (Pentium Pro) core, without the L2 cache. If you have any ideas, feel free to post in the comments.