Waiting for the Grading of my 1954 Proof Set to get started

Back in the fray again, although this time I suspect that my Grades will take a little longer to get to me than usual. You see, my 1954 Proof Set crossed that mythological boundary set for Modern tier submissions. (1955-above) I always wondered why 1955 was set as the date. It's not that coinage was any different between 1954 and 1955. 1955 just happens to be the line in the sand, and since I'm too cheap to go Early Bird, I went Economy. And so I will wait for that long turnaround and just sit here broken-hearted.