I'm new to quality kitchen knives and was about to purchase my first ones when I came across some old Japanese ones in storage. Can anyone identify them and tell me if they are any good? I would save a lot by not having to purchase new knives and could just get the stones to sharpen them. I'm also not sure of the type of knife, but the lengths are 230 mm, 200 mm, and 240 mm. Can someone point me to where I should go for tips on restoration, if I need to do so?