The Coin Wiki

What Is a Key Date? (The Concept Explainer)

The key-date Shorts form one of the channel’s deepest topic clusters, but the concept still needs a long-form home. The working definition is simple: scarcity plus demand. This page does not state mintages, populations, grades, or values.

Why the concept matters

  • A scarce date becomes a key when enough collectors need it to complete the same series.
  • Numismatic premium lives above metal value and depends on authenticity, condition, and demand.
  • Fraud concentrates where a tiny altered detail can create a large apparent premium.
  • The operating never-raw list is 1916-D Mercury dime, 1909-S VDB cent, 1914-D cent, 1893-S Morgan dollar, 1916 Standing Liberty quarter, and all gold: certified-only under the current house rule.

Recorded video cluster

Ten Public Shorts were recorded as published on September 13, 2026: 1909-S VDB, 1893-S Morgan, 1916 Standing Liberty quarter, 1877 Indian cent, 1955 doubled die, 1932-D quarter, 1901-S Barber quarter, 1914-D cent, 1921 Peace dollar, and 1943 copper cent. A revised 1909-S VDB Short was authorized on September 15. Check the channel before calling that revision public.

Long-form coverage exists for the 1955 doubled die and the 1943 copper cent; the 1916-D Mercury dime also has a pilot. Exact links below are limited to assets available in this build.

1955 doubled die1943 copper cent1909-S VDB1893-S Morgan1916 Standing Liberty quarter1877 Indian centAll channel uploads
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