I say variety - apparently the Wedding Set coins of that year all have the gap and I don't think that is due to die fill. Probably a Wedding Set die ended up in the circulation die rotation somehow.
In my looking at change the gap coin is about 0.8% to 0.9% of the mintage so you can figure out a rough mintage from that.
In my looking at change the gap coin is about 0.8% to 0.9% of the mintage so you can figure out a rough mintage from that.



















