My problem: I have three spools of sterling silver round wire, 24
gauge 10 ounces and 15 ounce and a 22 gauge 15 ounces. I stored them
incorrectly and they tarnished, oxidized, lightly blackened along the
top side of the spool. I would welcome suggestions on removing the
oxidation so that I can sell the wire ( I package it in 6 foot
lengths). If I can’t fix the problem I will have to try to sell it at
cost or below. Thanks for any assistance.