India - British Rule: 1/12 Anna

3 pies = 1 pice | 4 pices = 1 anna | 16 annas = 1 rupee

1/12 Anna was the smallest denomination in british monetary system in India.

 Years: 1877-1901
Value: 1/12 Anna = 1/192 Rupee
Metal: Copper
Weight: 2.1 g
Diameter: 17.5 mm
Engraver: William Wyon (obverse)

 Years: 1906-1910
Metal: Bronze
Weight: 1.6 g
Diameter: 17.5 mm
Engraver: George William de Saulles (obverse)

Years: 1912-1936
Metal: Bronze
Weight: 1.65 g
Diameter: 17.4 mm
Thickness: 1.1 mm
Engraver: Edgar Bertram MacKennal (obverse)

Years: 1938-1939
Metal: Bronze
Weight: 1.7 g
Diameter: 17.5 mm
Engraver: Percy Metcalfe (obverse)

Here are all coins together to get the idea of their exact sizes. These coins are slightly smaller than the 25 paise India Rhino coin as shown in below photograph.