Companies like J&M will cast your designs with all kinds of metals. I would imagine that some kind of a reverse reduction lathe was used to increase the size. Or with 3d scanners and printers it's pretty easy to do it on computer.
Check out my previous threads and you'll find my previous art post.
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited. Contact Us | Advertise Here | Privacy Policy / Terms of Use