1.68 Milimeters
Bronze
Millimetres to 1 decimal place (or micrometres rounded to the nearest 100).
There was never an Australian pre decimal coin (pre-1966) minted with a Koala on the front, back, or anywhere else.
the thickness of penny is 2mm
Pre-decimal British Pennies were made from bronze from 1860 until 1967.
The decimal value is 0.080
The height of a penny is the thickness: 1.55 mm (millimeters)
1.55mm at the rim
19mm, Thickness is 1.55mm
Half a penny in decimal form is 0.005
A decimal halfpenny is written and was spoken as it sounds here - it is no longer in-circulation in the UK. The pre-decimal halfpenny was also written as one word, but was spoken like: "hayp'nny."
Penny - British decimal coin - was created in 1971.