I agree with biokemist6 about the placement & depth of the lettering, nothing special there. However, there is an obvious difference to me in the "form" of the letters. The first set has a uniform bevel that comes to a point at the bottom of the letter. The second set appears to have a shorter bevel that becomes flat at the bottom of the letter. The difference is best illustrated by the pictures of the 07 & the UN.
It looks to me like the dies were ground flat on the second set of letters. It looks too even to be die wear, although maybe it was done because of die wear. I don't know if this would be special or worth more but it certainly looks interesting.
It looks to me like the dies were ground flat on the second set of letters. It looks too even to be die wear, although maybe it was done because of die wear. I don't know if this would be special or worth more but it certainly looks interesting.



























