Quote:
.... How can it be a partial collar if both the Observe and reverse both show a somewhat normal collar?
They don't show a normal "collar" or a normal rim. The OP's images are slightly tilted but show the difference between the rims on the reverse.
John1's link explains it pretty well.
BTW- The question was a little confusing. "Collar" is a numismatic term referring to one of the three dies used to strike modern coins. (ie: the planchet was resting on the collar when it was struck.) Numismatic terminology can be confusing, and it may seem trivial, but the more precise it is, the more help we can be with the answers.
The part of the coin formed by the collar die is referred to as the edge (reeded, plain, etc). The outer portion of the obverse and reverse dies are referred to as the die gutter, which forms the rim of the coin once it is struck.
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