Then you clearly misunderstood me because I made it clear in my post that the pronunciation of "c" is entirely context dependent. Just as a general rule, it's a [k] before "a" and an [s] before "e". General rule for English-root words. There are exceptions, mostly in words of foreign origin.

My point was just that any English speaker would, at first glance, pronounce "Cefca" as "Sefka". Hence the transcription is bad.