Murata marks their CERALOCK resonators with the frequency, and a one symbol EIAJ monthly code or three symbol weekly code for the date code. Below are the drawings for each marking type by series, frequency table, and EIAJ monthly code
CSTCR_G / CSTNR_G / CSTNE_G / CSTNE_V Series
CSTLS_X Series
CSTLS_G Series
Frequency Table
EIAJ Monthly Code
