Greetings!! I recently acquired this 19mm diameter coin, I believe it is from the reign of Ptolemy III (???). I would like help with more information and to know in which city it was minted. One question: Does this greenish crust harm the piece? Once again I thank the foristas for their help.
The green is called bronze disease and it will destroy a coin. https://www.forumancientcoins.com/numiswiki/view.asp?key=bronze disease treatment
I'm going to start the correct treatment right away. Do you think I should start with superficial removal and immersion in distilled water, and then, if that doesn't work, move on to heavier treatments? I hope I can really save this piece
The one thing that I love about you ancient fellows is that you ain't afraid to scrub a dub something. Modern folks, like me, are afraid as the devil at doing a Douch. It might impact the value of the coin. Continue on fearlessly into the night.......
Spread on a generous layer of Ipana and let it stay put overnite. Rinse with mouth wash in the morning.....
As a start, soaking in water, brush with a soft toothbrush to remove the loose stuff and change the water every few hours. Final rinse with distilled water and dry it in an oven set on low for a few hours. Then see.
This is Svoronos 709/710, SNG Cop. 496/497 (18/20 mm - maybe one type, maybe two). Usually attributed to Ptolemy III. An issue of Tyre – hence the club of Heracles symbol left on the reverse. Search on svor 709 & svor 710 in acsearch for more examples. Ross G.
