Period - 1965 - 1972 Metal - Aliminium - Magnesium Weight - 0.75 gms Size - 17 mm Shape - Square with round corner
Period - 1964 Metal - Nickel - Brass Weight - 1.5 gms Size - 16 mm Shape - Circular
Period - 1962 - 1963 Metal - Nickel - Brass Weight - 1.5 gms Size - 16 mm Shape - Circular
Period - 1957 - 1961 Metal - Bronze Weight - 1.5 gms Size - 16 mm Shape - Circular