Off Center On Foreign Planchet?

I now have the coin and my quickie scale (accurate to the nearest 0.1g) provides a weight of 3.0 grams. It therefore falls within the normal range of variation for copper-alloy cents. That's what I fully expected. But it's a nice addition to my small stockpile of off-center coins with abnormal upset.

The off-center cent was minted between 1959 and 1968 and its exact weight is 3.04 grams. While the Mint has produced foreign planchets that weigh exactly 3 grams and that are composed of 95% copper, none of these candidates were minted during the requisite time period. So I'm confident this is a cent planchet.

This "long bevel" style of upset makes no functional sense, as the highest point on the planchet's proto-rim lies well inside the position of the future design rim. One of the reasons for upsetting a blank is to guide the formation of the design rim. This style of upset is decidely at odds with that goal.

Minimum diameter of the unstruck portion of the planchet is 18.75mm. So it would have fit comfortably inside a cent collar, had it been inserted properly.