Canada 1964 Dime-very unusual Die rotation. Information and Help needed please.
Is it technically possible for this rather large die rotation of approximately 240 degrees clockwise to be a mint error?
I assume that die rotation is usually measured applying clock-wise rotation starting at zero degrees on the obverse, vertical -Head up=zero.
Will TPG's recognize this rotation?
Does this coin command a premium on the market in raw condition or should it be certified?