Intel Pentium MMX 166
A lot like this PPGA Pentium MMX 166 but in ceramic form. I guess that most of the Pentium MMX 166 models are housed in the plastic cPGA form but there aren't any statistics available. The Pentium MMX 200 is actually quite uncommon in ceramic package. By the time the 166 and 200MHz parts became affordable Intel already switched over to the cPGA packaging.
The Pentium MMX 233 never came in ceramic versions.