How common is it to see luster only around the rim?

I've got a mint state Columbian commemorative that is lustrous around the rims, but dull in the center. It's this way on both the obverse and reverse. Is this a sign of tab toning?
Thanks,
Dan
Thanks,
Dan
0
Comments
By the time you get to 1860-1890, not having a full cartwheel on your unc coin is a no-no.
roadrunner