Dear George,
I can say with 99% confidence that the first letter is not a djanja since I have never witnessed that letter in any form but that which depicts it as being formed from three distinct strokes (1 straight bottom line + 2 straight lines that are curved at the top intersecting at 90 degree angles) as can be see here:
http://img524.imageshack.us/my.php?image=djanjapo3.jpgIt is thus most likely to be an upsilon. However, no Coptic word ever begins with an upsilon (upsilon can only be an initial letter when it exists in the diagraph form of omicron + upsilon), so it is probably preceded by the alpha which lies above it (and maybe even that reversed kappa as well?). I will get out my Coptic dictionaries and attempt to investigate the matter further, though i've only just completed my first semester of
Sahidic Coptic so i'm not sure how much help I can be. Nevertheless, given that my studies resume next week (though it may be the week after, I still need to check!) I can definitely show it to my Coptic Studies professor, who is a renowned Coptologist, and get and post her opinion.