Matt
so that would be about 1330. I can see what you noted, I had seen that before. I thought Gentoku but that did not seem reasonable, so I thought maybe the kanji was larger and I was just seeing the top. If it says Gentoku then the hole was there or the kanji written knowing the hole would be there, meaning the original hole. That may be the case, but I had thought it may have been added later and obscured part of the mei.
So if it says Gentoku probably gimei.
Any other thoughts appreciated