Compaired to some of you guys I know almost nothing about keris and I unfortunately can't help you, but I wanted to say that I really
really like it - it really touches me in a way that few keris do. The dapur (that's the shape, right?) has a great smoothness to it, very graceful. The carved groove in the middle, which I don't know the name of, fits in really well too! The ivory hilt is just icing on the cake.
Cheers and enjoy, - Thor