Interesting discussion and I will explain how I have arrived at my conclusion.
Your blade includes the following ricikan (carved details): Kembang kacang, jenggot, jalen, lambe gajah, pejetan, greneng sungsun or robyong (full greneng on the wadidang and ganja). Sorry for these terms but I believe that you are familiar with them or can find them easily in any kris reference book.
These ricikan exactly match with the description of dapur Sempana in the EK and book "Keris Jawa" with the exception of the jenggot (greneng above the kembang kacang) and the greneng on the wadidang
, however in the book "Dhapur" dapur Sempana does not include greneng.
Because there is no sogokan I could exclude dapur Balebang for this blade. By the way dapur Balebang also exists with 5 waves according to the EK, and 11 or 13 waves according to the book "Keris Jawa"....
Because your blade basically meets the specifications of dapur Sempana with the exception of the jenggot and greneng robyong, I called it dapur Sempana Robyong although this dhapur is not a recognized one, but the term robyong is frequently used for describing the blades with jenggot, especially in Bali. You can check on page 86 of the book "Keris Bali bersejarah" for instance (dapur Sempaner Robyong, dapur Sinom Robyong).
PS: I would not mind to consider the dapur of this blade as "diluar pakem" (outside the standard) which is very common for contemporary blades. I have noticed the very deeply carved jenggot and greneng and the odd lambe gajah which are not typical of Java, maybe Alan knows the maker? The pamor pattern is very nice.