Sulawesi (toraja?) keris

[David]

Of course, if we closely examine the dress of Marco's keris it becomes obvious that it's design is based on the beautiful gold keris that graces the cover of Mr. van Zonnefeld's Traditional Weapons of the Indonesian Archipelago.This is an important keris because besides it's beauty it was collected before 1750 in Sulawesi. It was in the possession of Stadholder Willem IV in the mid 18th century and was probably obtained by the VOC during unheavals with Makassar in 1666-1669. Elements and motifs of this dress has lead many to believe that it was actually created in Java. The blade is also distinctively Javanese. Note that Marco's keris has the same depiction of garuda on the sheath and well as a similar mustached (wayang?) figure for the hilt.
Jean's example seems to be patterned after the example that graces the cover of Tammens De Kris Vol. I, a sheath which he describes as 17th century Celebes, a South Sulawesi court piece. Interestingly enough this one also seems to have a Javanese blade. You can see a very similar naga motif on Jean's sheath as on this one.
So what basis do we have to call these examples Torajan?