This article is an attempt to establish the time-frame and relative chronology of the evolu-tion of consonant harmony in north-western Karaim. The sample material used for the present article comes from a Karaim handwritten Torah translation dating back to 1720 (the oldest analysed Western Karaim Bible translation), copied in Kukizów by Simcha ben Chananiel and written in the Ka raim semi-cursive variant of the Hebrew script. Addition-ally, in the present article an attempt is made to describe step by step how the harmony shift operated.