To end this discusion They are NOT gold pladet,at least most of them,i tested them in the acid.Only gold plated are those wich posted on photo Shmandi few posts above.
Tnx for your time and help
Peter
To end this discusion They are NOT gold pladet,at least most of them,i tested them in the acid.Only gold plated are those wich posted on photo Shmandi few posts above.
Tnx for your time and help
Peter
If the gold migrated and mixed in with the base metals as has been suggested, the gold will not show up as flakes but as a black powder similar to what you get when you deplate gold with a sulphuric deplating cell. If you have any sediment from your test you might want to dissolve it with some HCL and Bleach and test it for gold. But my guess from looking at the picture you posted of the pin you scraped the surface on is that they are only brass pin's.