With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Because it is resistant to corrosion, nickel was occasionally used as a substitute for decorative silver. Nickel was also occasionally used in some countries after 1859 as a cheap coinage metal (see above), but in the later years of the 20th century, it was replaced by cheaper stainless steel (i.e. iron) alloys, in the United States and Canada, except for a few ceremonial uses which still called for elemental nickel to be used.
text_B: If an American collector purchased a mint-condition, pure-nickel proof coin of his or her nation's namesake "nickel" coin, would the interior of this collectible coin be wholly different than that of a garden-variety American nickel that had no value aside from the 5-cents on its face?
YES.