Message:

<p>[QUOTE=&quot;cpm9ball, post: 1512826, member: 24633&quot;]<b><i><font size="4"><span style="color: #0000ff">Warning! Old thread!</span></font></i></b></p><p><br /></p><p>Machine doubling, also known as mechanical doubling or strike doubling, is accidental damage. It is caused when the die becomes loose in the collar holding it. The vibration of the machinery causes the die to move back and forth rapidly, and when it withdraws after striking the planchet, it scrapes the surface producing the flat, shelf-like machine doubling. It is very common and adds no value to the coin.</p><p><br /></p><p>Chris[/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