The 20 cents circulated a lot more in the west where there was less small change. The highest mintage is the 75-s then the cc then the 75p which is underrated. The 76 is truly a tough coin especially nice. I regret selling mine but needed money. You see a lot of fairly well worn 75 s and cc 20c out there
Another great numismatic history lesson in this thread; I don't have much to add so will just post pix of my 75-P, the last image is tilted to show off the color a little better.