Help with another Kana, Please!

[Bruce Pennington]

Sometimes finer detail is lost with oshigata.  What's your thoughts on the katakana in front of the "306"?

タ or ク?  I'm thinking ク, but the top left looks more like a 刀 to me, but that may be, like I said, errors produced by the oshigata process.

[SteveM]

Looks like ク

[Bruce Pennington]

2 hours ago, SteveM said:

Looks like ク

Thanks Steve!  It was my thought, too, but I wanted to check since I had not seen a number with that kana on one of these blades until now.