Moro Kris

[Mick]

Rasdan

Yes that's it. This occurs when the smith had finished (he thinks) welding up the blade and then finds this fault in the weld when he begins the cutting and finishing of the blade. He removes the part of the weld that covered this fault and is faced with the choice of gong back to the forge (possibly screwing up the piece) or accepting what he has in hand. When the fault is not bad, that is structuraly unsound it is only a blemish on the final product. This will probably cause a reduction in the final price of the piece, but it is not a catastrophe such as when this fault goes all the way through the blade.
The faults on your piece do not seem to go all the way through (based on one view of the pesi) but the are pretty deep and if they were longer in llength (say twice what they are) would probably effect the use (and survival) of the piece in actual warfare.