Knurling on 2004 to 2020 circulating canadian coins
By castor | Tuesday, 29 January 2019
Last update: January 2021.
Since 2004, Royal Canadian Mint issued 19 circulating coins with different colored design for several denomations.
This article illustrates my observations as a collector who wanted to know more about who it's made. It isn't meant to be technical or scientific. By looking at the coins, which the color has been removed, we can see the changes that were made over the years.
From 2004 to 2011, it's possible to see a transparent vernish-like substance near the color. Here are 4 examples of this.
How the color was applied changed in 2015.
Under the color
Pictures of knurling below are made with a 200x zoom. Because of its engraving characteristics, the 25 cents 2010 - Poppy circulation coin is unique.
25 cents 2004 - Poppy
First colored circulating coin produced by the Royal Canadian Mint.
The design of the poppy is under the color. Round convexe knurling.
25 cents 2006 - Breast cancer
25 cents 2008 - Poppy
25 cents 2009 - Men's hockey
25 cents 2009 - Women's hockey
Square convexe knurling. Red arrows show the design difference between the colored and normal coins.
25 cents 2009 - Cindy Klassen
25 cents 2010 - Poppy
25 cents 2011
25 cents 2012-2013
25 cents 2015 - Flag
Knurling dots became closer. Square-shapped base with flat round top. Took more time to remove the paint while soaking in acetone.
25 cents 2015 - Poppy
25 cents 2017 - 150 years
Square-shapped base with flat round top. Took several hours, instead of 5 to 15 minutes, to remove the paint in acetone.
2 dollars 2017 - 150 years
2 dollars 2018 - Armistice
2 dollars 2019 - D Day
2 dollars 2020 - Bill Reid
2 dollars 2020 - Victory
1 dollar 2020 - United Nations
Knurling overview - 2004 to 2018
In my opinion, Royal Canadian Mint is still trying to figured out the best knurling for the paint.
- Canadian coins
- Canadian banknotes
- Canadian tokens and medals
You can submit your own articles by contacting us.