Apparently, it seems that this particular variety was only discovered comparatively recently, despite the fact that the Wisconsin type Quarter has been in circulation for around 8 years.
Make that 18 years, and from what I read, they were discovered in late 2004. It's somewhat surprising that they are being found with any frequency anymore.
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
A time is coming when men will go mad, and when they see someone who is not mad, they will attack him, saying, 'You are mad; you are not like us.'
-St. Anthony the Great