Corroded copper coins. They lie in a container with phosphoric acid. Prepare for their cleaning and patina
Corroded copper coins. They lie in a container with phosphoric acid. Prepare for their cleaning and patina.
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Keywords:
acidarchaeologicalarchaeologybackgroundbusinesschemicalcleancleaningcoincoinscontainerconvertercoppercorrodedcurrencydiggereconomyequipmentfinancefinancialhandhistoryhobbylieliquidmetalmoneynewnormalnumismaticsnumismatistointmentpatinapatinationphosphoricprepareprotectprotectiverustsafetysavingsodasulfurictheirthey
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Image ID: 198450555