Jericho: I'm not a collector nor an authority. "AS FAR AS I KNOW" Rem. is the only maker (not counting custom) who named them 7mm Rem Express. And that was for only a short time. They were concerned that some might confuse "express" with magnum.
Regardless of collector value, I think it has "COOL" factor. Few people have them and I have never seen one.
JWALL
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VEGETARIAN........Indian Word For Poor Hunter