Slag heaps near historical mine workings in Turkey and Greece show that silver mining started all-around 3000 BC. The steel was refined by cupellation, a process invented with the Chaldeans, who lived in precisely what is now southern Iraq. Silver(II) complexes are more popular. Such as the valence isoelectronic copper(II) https://konzeptualisierer.de/machen-sie-aus-ihrem-silber-bargeld-expertenratschlage-zum-verkauf-von-edelmetallen/