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<p>[QUOTE=&quot;physics-fan3.14, post: 3334128, member: 19165&quot;]The what are the what and do what? Explain what you mean. </p><p><br /></p><p>&quot;Flow lines&quot; develop as a die ages, and contribute to the appearance of mint luster. A brand new die is polished (hence the die polish lines). These die polish lines erode as the metal moves on the die, and give rise to the lustrous fields we associate with a business strike coin. The mirror finish quickly wears off the die. The coin shown is a very early die state, evidenced by the sharp, crisp details of all the devices, lack of flow lines engraved on the die, and absence of die cracks.[/QUOTE]</p><p><br /></p>

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