Message:

<p>[QUOTE=&quot;ToughCOINS, post: 3196749, member: 20480&quot;]All dies I have seen are largely flat-faced, and only depart from that plane near the very edge of the dies.</p><p><br /></p><p>I personally am convinced that the letters fade further from the center of the coin, not because of concavity of the dies, but because when struck the material nearer the center of the coin extrudes radially toward the edges, as is evident from flow lines left by die erosion over many strikes.&nbsp; Since the surface area of the coin increases as the square of the radius, it takes less material to fill letters near the center than letters further from the center.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in