The interesting thing about this blade is that it is actually bent back and forth (like a keris blade) during the forging process .
No stock removal here .
The blade really reminds me of the waking Naga form of Java* .
*see below .
It must have been very demanding work to make the waves even in size, keep it from twisting on the anvil, and to finally have it come out flat .
Kudos to the Smith .