Originally Posted by A. G. Maisey
Thank you for the close ups Anthony, but I'm sorry, still a long way from what is needed for clarity. However, I can comment a little more.
I said that I was inclined towards a Koripan classification. To confirm Koripan what I would be looking for is:-
perceived weight will be heavy; this is a trap, because when we say "heavy" in this context, we are saying "heavy in comparison with all other old Javanese blades" in fact, Koripan is roughly the same perceived weight as M'ram SA, but if you have not handled a lot of M'ram SA, you cannot possibly know what is meant by "heavy". In any case, if I look at the cross section of this blade, I feel that I would probably consider it to have a heavy perceived weight. The word we use is "tanting", and it is the weight we feel in the hand, thus perceived weight and is affected by balance.
iron will have a medium grain, this is too difficult for me to judge from a photo
pamor will not be sparkling and white but rather dullish/greyish, again too difficult from a photo
the heat treat will be soft, too difficult from a photo
overall visual impression (pawakan) will be large and handsome, which this keris is
the gonjo will have a similar profile to M'ram SA, but will be a bit smaller and a bit thinner, side-on this one qualifies, I do not know what the top looks like, nor how it looks in the hand when visually appraising proportions
gandhik will be similar to M'ram SA, but the kembang kacang will be smaller, thinner, this is the case in this blade.
the blumbangan in a Koripan keris is usually quite shallow, which appears to be the case with this keris, but in Koripan the blumbangan usually does not display pamor, in this keris the blumbangan does show pamor
Koripan sogokan are smallish, poorly contoured (ie, cross section), not deep, and the poyuhan (ie the tip of the sogokan) is more or less rounded; in my opinion, this keris meets those criteria, moreover, by close inspection of the palemahan (base) of the sogokan we can see that the pamor is missing and that the sogokan have gone through into the core, this tells us that although there is pamor showing in the palemahan of the blumbangan, that pamor layer is very, very thin, the blumbangan is already very shallow, I suspect that one or two more cuts with the scraper would remove the pamor completely from the palemahan of the blumbangan.
A Koripan ada-ada is poorly modelled, it is usually only a ridge, not nicely sculpted, not defined, just a ridge, and it becomes less and less distinct the further along the blade you go; this blade appears to have a Koripan ada-ada, but I would need it in my hand to be certain.
kruwingan in a Koripan blade are shallow, and if they exist at all, they only appear in the lower part of the blade, this appears to be so with this blade
the luk in a Koripan blade are rather deep and round if compared with a M'ram Senopati blade, they are very similar to M'ram SA, the luk in this blade most definitely qualify as Koripan.
A Koripan wadidang is quite long, it follows a middle, or moderate line, it will sometimes have a ron dha nunut, there is no mention of a tungkakan in a Koripan blade, but I have handled Koripan blades that do have a tungkakan. I would accept the wadidang on this keris as representative of Koripan.
OK, the above is an example of some of the things I look for when I attempt to appraise or classify a blade, the determination of the classification I decide on is nearly always a decision taken on weight of evidence. In this blade of Anthony's the indicators do not give a perfect reading for Koripan, but the weight is in favour of Koripan, thus, if we say that no, it is not Koripan, then we must be able to say why it is not Koripan, and hopefully nominate a different classification. Now, if we go in this direction, there is really only one other candidate, and that is Godean. The difference between Koripan and Godean is very, very minimal, and far too difficult for me to determine from a photo. One obvious distinguishing feature with Godean is that if it is a waved blade, the point is usually very long. This blade of Anthony's does have a long point, but not markedly so, not enough to influence me to start thinking Godean.
My nomination remains Koripan, my estimation of age is 19th century, this is based on overall erosion of surface and form, it is in pretty good condition, we can see that the pamor cover of the blumbangan palemahan is very thin, if this blade were to be much older than early 19th century, I feel that the degree of erosion would be higher, and we would probably see core material in the palemahan of the blumbangan.
I have not commented on the dress, but it really is very pedestrian, just below average pasar quality. I do not recognise the lambang on the pendok, I have no idea at all what "PS" might stand for. Effectively the wrongko and pendok have very little value, the mendak is old, seems to be in good condition and is OK, I cannot comment on the hilt because I cannot see it.
Something that should be noted is this:- in Jawa, especially Central Jawa, Solo, Jogja, it is very usual, in fact this almost always happens, for a keris salesman to present Koripan keris as Mataram Sultan Agung keris, and then attach the name of either Mpu Kinom or one of the other noted mpus of this era. If a goldfish swims with sharks the sharks will eat the goldfish.