Posted 04/10/2006 2:43 pm
I agree with Bryan, but will go one step further and state my opinion is that both have been polished with a buffing wheel. See those little granular-looking patterns on the fields and faces? That's a solid indicator that the surfaces have been polished (one form of "whizzing"). The buffing removes part of the coin's surface to produce this effect. I'm not a metallurgist, so probably can't explain it right, but if I understand the process correctly, coin metals (most metals actually) are in the form of crystals (following rolling, stamping, or other impacts on the metal) such that when a coin is buffed, the softer parts of the crystals are removed while the hard "points" of the metal crystals remain to give a "goosebumps" effect.
Someone give a more articulate explanation?
Someone give a more articulate explanation?
