I am doing an experiment: try to whether one coin to make it lok old or give some nice patin. But d*mn these coin are of awesome quality, I set one on fire, put in several acids but still.. just clean it water and it fine again
For now I put one coin in my garden and see what the wheather does to it, I will take pictures of during a year.
I absolutely LOVE the look of patina'd coins! Here is one I took last year of my personal, lucky 2015 Bitcoin Penny next to a shiny, new coin. My personal, lucky coin banged around in my pocket with loose change and keys for more than a month before this photo, with me handling it every five minutes! The patina is GORGEOUS! You'll see a subtle spectrum of colors, including bright copper, pink rose, emerald green, and hints of royal blue.
I've often thought about hosting a patina color contest, but I never thought anyone would be crazy enough to enjoy the patina as much as I do.
But if you want a good, colorful patina, then here's a little advice...
Our very first run of 1,000 coins were easier to patina. Since then, all coins come with an ultra thin protective finish. (Personally, I don't prefer the protective finish, but most collectors here would probably choose the shine over the patina, so that's the way we mint them.) The finish can be removed with simple acetone (fingernail polish remover). You can also use extremely mild and fine abrasive compounds like fine silver polish.
Once the protective finish is removed, the secret to developing a great patina is to keep rubbing the coin in your hands, between your fingers and thumbs, as often as you can, all day long. Then let is sit for a few days to darken. Then repeat. Once the coin is a dark brown, rub it between your fingers and thumb again, lightly. The top patina (brown) will be removed, leaving the bottom patina (rose, green, blue) exposed. It's a delicate balancing act to get the right patina, but TOTALLY worth it (if you appreciate a good patina).
Can't wait to see some photos of patina'd coins!
Regards,
Chris