The Canadian 1 cent has been demonetized from physical circulation in 2014 rounding to the nearest 5 cents in change. Electronically, it is still used in accounting, invoice, billing etc as if it was not really phased out. Funny how my old 25 pounds weight of copper pennies have more than 3 cents worth of copper in each of them now.
Is that factoring in the fact that they're just coated with copper..? Bonkers!
Here's the Coinflation link showing Canadian 1 cent pennies dated 1996 and earlier, keep in mind FX Can/USD is 0.72 hence worth more than $0.03 CAD. 1 Cents 1997 and newer are just copper coated steel yet even these are approaching par to face value.
There is a site that has a tool for calculating the value of UK copper/bronze coins but forgot where it is at this time.
OK cheers!