Intel Pentium II 350
Is a Pentium II 350 a Pentium II 350? Yes and no. I have a couple of Pentium II's running at 350MHz that look and behave identical. However, on closer inspection it turned out they are assembled in different countries (Philippines, Costa Rica and Malay).
On the second picture I have stacked these almost identical 350's. Two of them even have the same production date (week 50, 1998) .