Author Topic: Measuring and die rotation  (Read 6922 times)

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Offline Bimat

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Measuring and die rotation
« Reply #15 on: December 10, 2013, 04:54:49 PM »
Excellent work Peter and Ole! Will try the method with some of the cheap coins in my collection. :D

Aditya
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Offline FosseWay

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Re: Measuring and die rotation
« Reply #16 on: December 10, 2013, 06:47:15 PM »
I have the above equipment for measuring weight and size, plus a magnet.

But so far I have not come across a coin where anything like a precise measure of die rotation has been important for attribution. Broadly, milled coins are officially either 0 or 180 aligned, and if they are the opposite, or somewhere in between, it is glaringly obvious and generally an error. IME hammered coins, and a lot of tokens, are completely random anyway.

Are there any coins, errors excepted, where a precise measure of rotation is needed in order to attribute them precisely (e.g. to a given mint, or if undated, to a particular timespan)?

Offline dheer

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Re: Measuring and die rotation
« Reply #17 on: December 10, 2013, 07:09:51 PM »
Are there any coins, errors excepted, where a precise measure of rotation is needed in order to attribute them precisely (e.g. to a given mint, or if undated, to a particular timespan)?

Although not direct, in some Indian coins, the design is such that unless you measure it becomes very difficult to find out if it actually is an error or not.

Plus there are people who like to make a Clock Theme on rotation errors, that to in same metal / value coins. There are quite a few who have done 12 in a Clock, but some want to do 24 in a Clock, so yes here to an extent measurement helps  :)
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