Re-toning cleaned silver coins naturally

[Grizz]

What are the preferred methods to naturally re-tone a silver coin?  I know it's a lengthy process, but I would rather have a natural toned coin. I'm thinking taking it out of the flip is probably a must? Better to keep in bright light or in a dark drawer? How long does it take to start seeing any results? Would like to hear some of your experiences with this. Thanks!

[Joe Sermarini]

I have never tried it, but I have heard that if you put a silver coin under a lid with a broken egg (I don't know the exact arrangement), it will tone quickly. This is exactly the same natural process that will occur if you just leave it out on a windowsill, just sped up by sulfur in the egg.

[Bill W4]

Flower of sulfur seems to work  https://www.forumancientcoins.com/board/index.php?topic=101565.msg626346#msg626346  for me anyway

[Mayadigger]

Ave!

I have never tried it, but I have heard that if you put a silver coin under a lid with a broken egg (I don't know the exact arrangement), it will tone quickly. This is exactly the same natural process that will occur if you just leave it out on a windowsill, just sped up by sulfur in the egg.

Boil the egg for 3-4 minutes, crush it well, then place the coin and the broken egg into sealed baggy. It actually works...but a bit messy. :-)

Best,

Kevin