Welcome to the forum Wijaya.
It is an interesting keris. I suspect that despite the current dress the blade originates elsewhere, perhaps Madura. Would be nice to see this blade in full stain if you have access to warangan or some person who can do that for you. I'd like to see this pamor in full stain.
The hilt is not oriented properly for this dress form. The hilt should be turned 90 degrees as shown in the photo below.
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