Hello Dzyner,
welcome to the forum.
Your dagger is 100% original and beautiful.
The TM, the scabbard release button, the blade, the screw on the pommel, etc are absolutely authentic.
Congratulation.
You have a great dagger!
Best regards,
Janos
PS: Regarding to the reddish tint in the grooves of the dagger's pommel, cross guard and scabbard - well, I don't know what it is. I've seen it on several original daggers, but I am not a chemist. Metals, reactions, etc are not my territory.