Another 1859 Canadian Cent. Possible Brass? Pics Incl.

another pic to show thickness on the 1901.

An 1859 should weigh 4.54 g and they were 1/3 thinner than all cents from 1876 and later. It should have a diameter of 2.54 centimeters. When they made them, 100 would weigh exactly 1 pound and 12 strung together was a foot. Your coin does not look like an inch in diameter. The 1901 & '59 should be the same diameter and yours doesn't look like it. Brass or bronze, the dia was 2.54 cm and your weight is way off. Your coin has been in contact with a cleaning agent that has turned it yellowish. If you think it's brass, you will need an XRF, but I wouldn't spend much money to check it .... too many red flags.

The 1858 & '59 large cents were 1/3 thinner then the British half-pennies that they were intended to be compared to. They were the same diameter as the half-pennies, so they were struck on the same mint presses in London, but made of 95/4/1 bronze rather than the pure copper of the half-pennies. When Canadian cents were next struck, in 1876, the Canadian cents were exactly the same dimensions as the half-penny, again struck in London or Heaton. As far as the weight, I'd say that it's your scale that's wrong.

I noticed same thing on 1 of my 59s same diameter but thinner planchet , for sure.

Very cool. Any idea what's the deal with the punch in the center? Was it a method of cleaning or perhaps a method of trade?

If you have doubts, take it to a Jeweller and have it XRF'd.
then you know for sure...
then search on the forum for the metal components and hope it has enough of whatever metal to qualify for Brass. or post the results here.
then you would have a coin worth a few K.