Tjikeroeh swords

[Duccio]

Speaking of goloks from Tjikeroeh, I would like to know if any expert on this type of object can give me some information on the golok of which I am attaching some photos:
it is a knife with a very corroded blade (deep rust then eliminated? Or what else?)
But the thing that intrigues me is the writing in gold letters on one side. It doesn't read very well from the photo, but it says "K_GJELLERUP".
The only reference I was able to find online is to Karl Adolph Gjellerup, Danish poet and Nobel laureate (1857-1919).
But it seems rather strange to me that a Danish poet owns a golok and makes us write his name on the blade ...
Any suggestions?
Greetings to everyone.
Duccio