Miniature meriam kecil
Miniature meriam kecil (also known as currency cannon) is a type of very small cannon found on the Indonesian archipelago. Usually the length of these cannons is between 10–60 cm (3.9–23.6 in), with a caliber of 15 mm (0.59 in) or 16 mm (0.63 in), and has been around for hundreds of years.