Sumatra. Batak scale. Collected in the 1950’s by Jac Hoogerbrugge. See his drawings and collection note. Exhibited in the exhibition “De Bataks op Weg” (“The Bataks on their Way”) in the ethnografic museum Delft between Oct. 1967 and sept 1968. Published in the catalogue under number 183. Height and Width : 56 by 47 cm. Diameter : 15 cm.