I just purchased a 240mm Takeda Gyuto and it came with an odd depression in the blade. It is about an inch and quarter long and a quarter inch wide. It is not very deep but I can feel it when I rub my fingers across it. On the opposite side of the blade I cannot feel anything but can see a vague outline of the depression in the kurouchi finish. Also, in the same general area on the spine, there is a small dent as you can see in the photo. Also, the side of the blade with the depression is slightly concave as I can see when I put it on my cutting board or lay a straight edge across it from spine to edge - the spine side and bevel side contact the straight edge but there is a small (1mm or so) gap in the center.
I have never seen something like this before and wonder what could have caused the odd depression! Are these things a big deal or just inconsequential cosmetic blemishes to expect with Takeda? If only a purely cosmetic issue, I would rather not go through the hassle of sending it back for an exchange. The slight blade concavity is what concerns me the most.