
What is the secret of ancient coins cleaning?
Depends on the room. Soap and water, olive oil, and the first WD-40 3 options of rooms very dirty and rusty. Soak before rubbibg with your fingers or a toothbrush. Chinese bronze coins be brushed with a wire brush because they are very strong. Parts of corrosion can be picked with a pointed metal object and a steady hand to avoid damage to the room. Beyond this does not clean the already in a decent state or allow a professional.
ALLAHU AKBAR