Enquiry on keris motifs

[Paul de Souza]

I have this Naga in Malay dress. I have always wondered if it is Peninsular or an imported Java blade. Can we tell the difference? What I like about it is how the Naga's body limits itself to the sogokan. Is there a law or adat for this? Which is more common - this body form or the full blade length body?

The sarong has no buntut I so did not show the whole sheath to meet upload limits.

Comments please.