Don't really understand your second post but here is the most complete answer I have to your original question.
A few years back when the Post Office established official two letter designations for all 50 states, Randall started switching some of their stampings and will eventually switch them all. At present they are using both. I suppose they are just doing one blade style at a time or something like that.
I wish I had a better answer but when I asked Gary that same question a few weeks back, that was the answer I got.
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A Patriot's Work Is Never Done--greetings from The Occupied South