For context, it's a nakiri made by artist 藤原兼房. The blade is a 50/50 grind, so it's not left or right handed.
I can read every character except the third one down on the left.
Reading from the right:
Japanese forged steel high quality ?? kitchen knife.
The best I could figure was it was 乃 or 右 but drawn weird. All the others look ok although the 高 looks like it's drawn in the old style. So maybe it's an archaic character.