Dear Hartadi,
You should better clean and etch the blade first as it is too rusty for clearly seeing the pamor.
The blade looks typically Bugis with a dapur Sepokal, and some triangular pamor motifs seem to appear along the blade, sort of pamor Tambal?
If you are lucky, you may find a blade with a similar pamor in the book Senjata Pusaka Bugis but I did not notice it.
Best regards