Stupid question, what kind of toning (exposed to what ) causes the electric blue, pink, green, etc t

TexasNationals

I find it very interesting, do these usually bag due to AT or normally grade out? What is the coin exposed to get that kind of toning (Morgans and other silver) I think the answer is MS-70 for some copper (Indians). I am not bashing these coins, I think they look great, but coins like Aurora Borealis (sp) collection are normally toned that way due to what?

P.S. Nice collection AB, just curious.

Thanks

TexasNationals

Wow, these boards are moving fast tonight, bumping to see if anyone know! Happy New Year and be safe!

PawPaul

..I think I missed the link to what your referring to ........

djdilliodon

Mint bags, coins at the end of rolls, albums, folders, envelopes, Mint set packaging from 48-58 (more so from 57 and 58), and many other ways coins are stored can cause those colors. Remember though just cause a coin is stored that way doesnt mean the end result is going to be a colorful monster. Many factors come into play along with luck.

sinin1

I don't see the pic as to what you are referring too

QBert

'Thin film interference' is one explanation I read about. Sortof like colors on a soap bubble film.

WoodenJefferson

HERE