商標 : trade mark
肥後守 : place name in kyushu island of japan, that's where the knife was made
定 : made ,or you can take it as customized
I feel free to read these kanjis since these are just ... exactly traditional chinese characters.
With all due respect, one must be careful when appying Chinese definitions of Kanji to Japanese writing. While many characters
are the same, many are not. The reason mostly being that Kanji (漢字)entered Japan a very long time ago and it has evolved on
it's own, while in the meantime it has evolved in the Chinese language during that same time as well. In this example, the original
Chinese meaning of koma 駒 remaims in Japanese only as the name for Shougi pieces 将棋、and a pasture for horse grazing is called
a komaba 駒場。However. in daily Japanese language use, people would not associate koma with any horse, but a top(toy) or
a shougi piece.
As for 肥後守, while the land of Higo 肥後の国 is the old name for what is now Kumamoto Prefecture 熊本県 in Kyushu、
the name Higonokami meaning Lord (protector) of Higo refers to the type/style of knife.
The Higo no Kami originated from a local knife procured in Higo which had no locking system. Around 1986 the knife was redesigned by
Murakami 村上Tetsuji of Miki 三木 in Hyogo 兵庫県 Prefecture (nowhere near Higo/Kumamoto) who added the lever that you see today. A second knifemaker, and his name is significant to this thread may have also been involved in the modification and production, was Nagao 永尾 Shigeji. In 1899 a Knifemakers Guild was created in Miki, and the name "Higo no Kami" was trademarked in 1907.
But over he many decades the original members of the guild passed away and their families did not carry on, to the extent that the Nagao
family remained the only one of the original familes, under Nagao Motosuke 4th generation left still making the Higo no Kami knife.
So the OP has what I believe to be an actual Nagao "Kanekoma" made in Miki City, Hyougo Prefecture.
There are many "higo no kami" knives, some by reowned knifemakers, made and sold in Japan but only the Nagaokoma knives can be traced back historically to the original.
Didn't mean to get into Higo no Kami's like this as the OP never asked. But it was necessary to to explain why the 肥後守did not
represent where te knife was made.