Need advice on this keris I got from eBay

[Azman]

This one is longer and it has a beautiful warangka. The blade looks like it’s gorge from steel and has some coating on it. Alimony looks like varnish. Hopefully it’s not some kind of poison like ‘getah damak ‘ which was used those days for poisoning arrow tip and tombak or spear. I was told by the seller that this was from 1900 to 1940 range but who knows. It looks so much sturdy and I think almost like a katana blade. It’s longer too, almost 14.5 inch blade. I can tell it has been forge with layered metal but it has no pamor and the surface is not like a typical keris roughness. It’s much smoother. What is your view in this interesting sundang?