I think that the hilt was a more recent marriage with this blade. Usually not a good idea to judge the origin of the blade from the dress. I would say it is probably a Javanese blade, though i doubt it was pre-Islamic. I think you would need to post a lot more close-ups of details before anyone could nail it down to a specific part of Jawa like Cirebon. Even then it's beyond my skill set, though others here seem much more knowledgeable on such things. The pesi (tang) still looks very intact. While this blade certainly has some age i am not sure it extends much past the 19th century.