Hello Harimauhk,
Welcome to the forum. First thing, this thread is most appropriate in the Keris Warung Kopi, the keris forum. Moderators will quickly move it I imagine.
Second thing is...sorry, you got snookered. This is a tourist keris-like object. The same thing happened with my very first "keris". A "lake Toba" example but with "gold" kinata. I was disgusted when I received it.
Yours has solder applied to the surface to imitate pamor. Tough lesson but that's how it goes.
Third thing...don't let this discourage you
Take the time to read all of the material on this site, there's loads. Then you can purchase a real keris and go on from there.
Regards,
Emanuel