Feels like Christmas... In May, I sent some of my 1-cent errors that I had been sitting on for quite some time into PCGS. I figured given the current error market, my better (e.g., off-metal) strikes should be certified. Next batch will include double and triple struck coins. I have set up a PCGS showcase set with some of these newly certified errors, enjoy. http://www.pcgs.com/setregistry/showcase.aspx?sc=1855
Boy, they sure screw up a lot, eh? Some cool errors, though. I have been picking up a few error coins and I have the one Thai error that I love and am hoping to find more Thai errors when I go back to Thailand in the fall.
I would say screw-ups are common at the mint, but most are filtered out by mint (visually and through sorting devices, like the Riddler, and destroyed. Canadian errors are actually quite scarce - what you see in that PCGS Showcase set is about a decade of collecting off-metal errors, on a very modest budget. Most of my budget for errors goes for nickel dollar errors, which tend to cost much, much more...
Doubled dies (I assume you are referring to hub doubling) are not popular with Canadian coins... I published about a 1-cent 1967 doubled die in Errorscope, earlier this year, and collectors in Canada hardly batted an eye...
Does that hold for error coins in general, or is it just that kanuk coins in general are not all that collectable?
Doubled dies are not considered "errors" up here... folks just don't care about that. However, striking errors and off-metal planchet errors are pretty darned popular.