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<p>[QUOTE=&quot;Publius2, post: 8090985, member: 105571&quot;]I am not disputing this claim nor what [USER=24314]@Insider[/USER] had to say about it, just discussing it and speculating upon the mechanics causing the result.</p><p><br /></p><p>My initial reaction was that the lines looked like the radials seen from die wear but the circular nature told me it couldn&#039;t be so because everything I have read about the early US screw presses states that the hammer die is mounted such that it stays rotationally stationary in relation to the anvil die.&nbsp; I imagine that the interface between the screw and the hammer die housing is lubricated regularly and though I have never seen drawings showing it, I also imagine that there is a register mechanism that keeps the anvil die housing from rotating, such as a guide on the frame or register pins between the anvil die housing and the hammer die housing.&nbsp; If the register mechanism was worn, it would allow the anvil die housing to rotate to the limits of wear when the screw applied pressure to the housing.&nbsp; </p><p><br /></p><p>I don&#039;t recall ever seeing these rotational marks on any US coinage struck from screw presses, although I don&#039;t pretend to have seen tens of thousands of screw press-struck coins.&nbsp; So, the theory being presented here is that the screw presses gifted to India were worn out, particularly in the register mechanism, and the authorities just didn&#039;t have the resources or care enough about quality to repair the presses.</p><p><br /></p><p>Anybody care to correct or amplify upon my speculations?</p><p><br /></p><p>Interesting post and new knowledge gained.&nbsp; Thanks![/QUOTE]</p><p><br /></p>

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