1974-S Variety WMHR-001
Error
Description
Designated WMHR-001 under Wexler Variety ID 1974-S 25¢ Pr WMHR-001, this proof Washington Quarter carries a master hub reverse variety — a class of doubling that occurred at the master hub level rather than during individual working die production. Because the master hub is used to create all master dies, which in turn produce all working hubs and working dies, a doubling event at this stage has the potential to propagate across every die manufactured from that lineage. This distinguishes master hub varieties from ordinary doubled dies, which affect only a single working die. The WMHR (Working Master Hub Reverse) designation identifies the specific production stage where the anomaly originated. Struck as a proof at the San Francisco Mint, this 1974-S quarter belongs to the clad proof era of Washington Quarters (1965-1998) when standard proofs were produced on copper-nickel clad planchets. Master hub varieties are among the most systematically significant in die variety studies because they document hub-level manufacturing events rather than individual die anomalies.
Attribution History
- s:; Wexler Variety ID: 1974-S 25¢ Pr WMHR-001
- Expert attribution by Wexler Team
External References
Community & Reference
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