In 1922 J. Sanford Saltus, President of the NY Numismatist Club and the British Numismatic Society, died in London while attending a convention. The corner ruled it was from cyanide poisoning and proposed that Saltus was drinking ginger ale in one glass and dipping coins with potassium cyanide in another similar glass and accidentally took a drink of cyanide. So dipping could be dangerous to your health and it has been occurring for a very long time. http://www.numismatics.org/Archives/SaltusBio
True, IF the person knows what they are doing. Anyone who is reading this and wants to start dipping good coins, please stop. You will most likely do more harm then good. LD is a coin dealer and has experience, as do many of us here. If you wish to learn to dip, then learn on valueless coins and take it seriously and really learn. Just putting out a PSA to let everyone know its a skill to learn which coin to dip, and how to do it. Its not just a function of buying a bottle. Chris
Does anyone know of any formal classes or online step-by-step instructional videos for doing this correctly? Or can someone recommend where I can have a coin sent to have this done; someone with a trustworthy reputation? I have always heard that you shouldn't touch a coin but have seen many posts where experienced collectors have dipped their coins with no apparent damage.
It's not so much the dipping process that is so hard... it's pretty easy really. It's knowing what coin will benefit and which coin to leave alone. That is the part that takes years to develop.