Mind Your Phi's and Rho's - Tech Dense Metal Study for Mint

MsMorrisine

In the references I see "2015"
I'm guessing it can't be too old

Color Closeups that perhaps PCGSPhoto might envy!

http://ws680.nist.gov/publication/get_pdf.cfm?pub_id=919454

ricko

Wow... Long article...did the first five pages... saved the rest. Interesting what must be done to achieve the goals of modern coinage (cost, mint process, wear, vending machines, color).... Cheers, RickO

TomB

@ricko said:
Wow... Long article...did the first five pages... saved the rest. Interesting what must be done to achieve the goals of modern coinage (cost, mint process, wear, vending machines, color).... Cheers, RickO

I agree. I started to read it, as well, but put it away for later.

element159

That was indeed interesting. It sounds like these are new alloys that we will see in business strikes soon, less nickel, and add zinc and manganese.