This is a large brass container used to measure rice. It is called Gantang in Malay language. It measures at 17cm x 18 cm with weight about 3.10kg.
This Gantang originated from the Sultanate of Brunei dated 1322 AH ( 1899 CE). There is an inscription written in Jawi in Malay language,
" Inilah gantang perintah Brunei Al Malik Al Adil tarikh fi sanah 1322" translated, " This is the gantang officially ordered by Brunei The Just Ruler in year 1322 AH)
Similar gantang was mentioned in the book " The message and the Monsoon : Islamic Art of Southeast Asia" on page 205. The Gantang was dated 1239 AH( 1823 CE). Other references about the gantang are in michaelbackmanltd.com page under items 3281 & 1304.
References:Islamic Arts Museum Malaysia, The Message and the Monsoon: Islamic Art of Southeast Asia, IAMM Publications, 2005.
Singh, B., Malay Brassware, National Museum of Singapore, 1985.
http://www.michaelbackmanltd.com items 3281 & 1304
Dim : 170mm x 180mm
Date : 1322 AH ( 1899 CE)
Material : Cast Brass
Origin : Brunei