Thank you to all of you who responded to this thread, it has been an interesting learning experience with many a good thought and discussion.
At this point the consensus point primarily to a Madura origin or less likely East Jawa. The blade older probably tangguh Tuban.
What remain as a point of interest is the wrongko, which is unique in design and properly made to be a decorator piece.
We can now as a result of this limited discussion segregate the so called Madura/East Jawa tourist keris wrongko into at least three areas of interest.
First: the tourist-tourist keris.
Second: the ones brought back to Holland by the soldiers.
Third: the ones of unique design made for decoration.
Mine and the one Frey pictured in the archive, would clearly fall into the third category.
Again, thank you all for your participation. Next I will post a piece that will bring our friends from Singapore and Malaysia into the discussion.