Source: Period text / still in use
Pedang bengkok literally means "curved sword" in Indonesian.
It is the name often used for a specific type of sword with a flamboyantly carved pommel, usually made of horn.
A rather fine but otherwise typical example of a pedang bengkok.
Sold by Mandarin Mansion in 2019.
Zonneveld associates the type with Sumatra, Java, and Bali. I have had one earlier with a purely Lombok blade.1
Gardner illustrates three and calls them pedang bentok, probably a mistransliteration, but does not associate them with any geographical region.2
One example is illustrated in a catalog of the Rijks Ethnografisch Museum and described as being a saber from Riau, a province on central Sumatra, bordering to its eastern coast.3
Collectors in Indonesia associate them strongly with Sumatra and Lombok, most of the better ones are believed to be from Sumatra, mostly Palembang. The name for the often somewhat cruder Lombok variety is klewang Sasak, with klewang meaning "sword" and "Sasak" referring to the Sasak people, the Islamic main population of Lombok.
Most examples in Dutch museum collections seem to have been collected on Java in the second half of the 19th century.4
Stylistically, the handles resemble work from Sumatra, especially the piercing and carving on their horn hilts, which resembles work on hilts and scabbard mounts of the better sewar daggers. At the same time, the blades sometimes have Balinese or Lombok features, while the silverwork could be Javanese or Sumatranese. Not much is known about the type, and who would wear them. They tend to be rather well made and I suspect they may have been swords perhaps worn by the upper-class, representing pan-Indonesian styles.
A rare photo
Batak warriors in 1870. Photo by Kristen Feilberg. Tropenmuseum Amsterdam Collection.
The photo above is a rare depiction of the carved horn hilts frequently found on these. It is in the hands of a Batak Warrior photographed on Sumatra in 1870. But when looking at the scabbard, we're back to the drawing board: The sword is straight and cannot be called a pedang bengkok. It cannot be a klewang Sasak either, because these men are Batak who live over a 1000 km away from the Island of Lombok.
Notes to description
1. 3. Zonneveld, Albert van; Traditional weapons of the Indonesian archipelago. C. Zwartenkot Art Books, Leiden. Page 102.
2. G.B. Gardner; Keris and other Malay weapons, Progressive Publishing Company, Singapore, 1936. Page 68.
3. H.W. Fischer, Die Inseln ringsum Sumatra (Katalog des Ethnografischen Reichsmuseum IV, E.J. Brill, Leiden, 1909. Pages 24 & Tafel VII.
4. For this assessment I surveyed the collections of the Tropenmuseum in Amsterdam and the Ethnographic Museum in Leiden.