Hi Watty, Your images are hard to see anything specific, they are too shiny. To me these all look like well circulated quarters, these all have some damage from rolling machines, which is what you are seeing, the circular patterns around the edges.
The 73 is a small bust (common version), and around the A in Canada it looks like there may be a planchet flaw, or a strike through, or it may just be
PMD (I cannot confirm from these images).