The area by the date does look like struck thru grease. The lines radiating from the devices might be a result of worn dies but I would like someone else to chime in on that. Note you have doubling in the A on Canada.
I think all the cracks are from crappy plating job. They had just started using that multiple-plated process and I don't think that they had it down right. Without the coin in hand, I can't tell you about the large spot.