Have a 1964 - D penny that appears to be rotated. How can I measure this , and is this a known error coin ? When I use 2 pennies side by side, and as carefully as I can flip them , the 1964 seems to be about 15 degrees off. Thanks in advance for all the helpful members.
Usually a coin would have to be at least 90 deg.'s off to be of any premium. 180 deg.'s is a real nice find. An easy way to measure is to put the coin in the exact size coin flip it was intended to be in (with crease at the bottom for this) and line up the obv. as best to perfect as you can. Make sure the flip is squared off and pop one staple in it. Then flip it over and mark the rev. angle. You can put the flip up against a ruler or straight surface before and after you flip it over. If the rotation is horizontal it is 90 deg.'s and naturally if a stright verticle then 180 deg.'s Some coins may be of interest if off 45 deg.'s or more also.
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