Does Anyone Know If Canada Uses Single Squeeze Dies?

Your reply was split into its own topic and moved to the appropriate forum for the proper attention.

Reference Topic: http://goccf.com/t/393732

This article https://www.coinworld.com/news/prec...ed-dies.html says "This type of doubling can occur with single-press hubbing, which was first used for Canadian coins in 1978" but doesn't say whether it was across all die making, just certain denominations, etc, nor does it cite a source for 1978. The US started developing it in 1985, according to Wexler, but doesn't say when it was first implemented. Denver started making dies this way in 1996 for cents, nickels, and dimes, but they had problems making it work for quarters and half dollars. They worked out those problems and in 1999 the mint announced that all US coinage dies were being produced with single-squeeze hubbing. Perhaps it also proceeded in fits and starts in Canada? I asked about this on another Canada thread quite a while ago but nobody answered.

I'd like to re bring up this topic, does no one know if Canada uses single squeeze dies for modern coins and if so when they switched? I just would like to know what to look for if I start looking for doubled dies on modern coins.

You are looking for answers to a question that I'm almost certain nobody actually knows, unfortunately. I mean if you know anyone that works at the mint they MIGHT be able to find out but my guess is sometimes in the early 1980s to 2000s the RCM started using the single squeeze method.

2006 5 Cent nickels for example were subject to master die doubling produced by using the single squeeze method.

Through all of my documentation, studying and research regarding doubled dies on every denomination of modern Canadian coins from 1940 to 2021 there was an abundance of doubled dies on each denomination up until 1979, doubled dies became fairly uncommon until around 2012 and the designs became more "generic" looking.

Prior to 1979, you could tell that the mint used different methods (older style) because the designs, details, and even the beads/denticles around the rims had minor imperfections, as soon as the 1980s hit everything turned dull, and again, generic looking.

If I were to take a wild guess these would be my estimates...

Pennies - 1980 to 2012 = Single Squeeze
Nickels - 1980 to 2021 = Single Squeeze
Dimes - 1980 to 2021 = Single Squeeze
Quarters - 1980 to 2021 = Single Sqeeze
Loonies - 1980 to 2021 = Single Squeeze
Toonies - 1980 to 2021 = Single Squeeze

Long story short, to me it looks like sometime in the 1980s is when single squeeze became the norm, but again these are only guesstimates.

The single squeeze method was supposed to get rid of the chance for doubled dies to happen, however, it actually made doubled dies even more interesting.