Provided that the clean and stain job is done by somebody who understands the process, the end colour of the blade is always 100% dependent upon the material in the blade.
Always.
Bali blades are usually of high contrast material and nickel is mostly present, so they finish looking black and white.
Surakarta blades are similar.
But when you are handling a Pajajaran blade, you are dealing nearly always with pamor that has been produced from high phosphorus iron, so you don't get black and white, you get dark grey and light grey or dirty white.
With a village made blade the material can vary enormously so we need to closely monitor the changes in appearance when we first start to work on it.
We should be able to guess fairly closely what the blade will finish like as soon as we start to work on it, even if we have no idea of classification of the blade.
As for tangguh.
This is a system of classification that in this day and age appears to be almost completely misunderstood. It developed in response to a need, and now that need has passed the guidelines that originally applied are no longer followed. Every salesman, and every collector wants to place a tangguh on his blade, almost as if that is a seal of authenticity. It should not work like this. Tangguh should only be applied to blades of adequate quality that can be identified with a specific source. When we are considering a lower quality blade, or a village made blade, we should not even attempt to place a tangguh on it --- but that will not stop dealers and collectors from continuing to want to do so.
To classify a blade according to tangguh there are a number of indicators that need to be carefully observed and considered. There can be more than twenty, but there should not be less than twelve. Some of these indicators depend upon the perceived weight of the blade, its point of balance, and its texture when felt. It is only occasionally that a blade tangguh can be given from photographs. The occasions where you could chance giving a tangguh from photos would be restricted to some blades of extremely high quality that follow a kraton pattern exactly, or blades with certain distinctive features, such a Segaluh blade
Michel, regarding the presentation of my blades:- all were prepared for photograph in the same way. They are always kept "in oil", because I store my blades in plastic sleeves and the blade surface is always wet with oil. Prior to photographing them they are patted dry with a soft lint free cloth, then brushed over with a soft brush. The differences you can see in the blade surfaces are due to actual differences in the material and degree of erosion in the blades.
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