Diagnostic Controls & Presets King of Barber Coinage (12,624 Mintage)
Diagnostic Forensic Readings
Forensic Attribution Diagnostic
Real-time metallurgical and die variety cross-examination verified against certified populations.
Technical Breakdown: Physics, Metallurgy & Die Diagnostics
1901 Philadelphia Quarter: 8,892,000 pieces (704x higher)
San Francisco focused almost all coining presses on silver dollars and half eagles in 1901. Quarter production was halted after striking just 12,624 pieces, creating the most famous key date in modern silver coinage.
Mintmark Diagnostic: Small round 'S' with bulbous serifs
Attributed according to Lawrence's Barber quarter reference. Because only two reverse dies were employed, genuine coins can be 100% authenticated by the exact millimeter positioning of the 'S' relative to the tail feathers.
Mint State Population: Fewer than 40 certified coins
Because nobody saved quarters in 1901, almost the entire mintage circulated through Western saloons and general stores. Even a heavily worn Good-4 survivor commands over $4,500.
Documented Benchmark Auction Records
Ex-Friendswood & Simpson Collection. The undisputed finest known specimen on earth; blazing silver cartwheel luster with full headband.
Choice Gem uncirculated survivor; sharp eagle breast feathers, pristine fields, and bold San Francisco 'S' mintmark.
Textbook honest pocket change survivor; full outer rim, clear 1901 date, and sharp genuine 'S' under the tail feathers.
Frequently Asked Questions
Why is the 1901-S Barber Quarter known as the 'King of Barber Coinage'?
With an official mintage of only 12,624 pieces, the 1901-S Barber Quarter has the lowest mintage of any regular-issue Barber coin (dimes, quarters, or half dollars). Virtually the entire mintage entered heavy circulation, and almost none were preserved in Mint State by contemporary collectors, making it one of the most famous and valuable 20th-century American coins.
How many 1901-S Barber Quarters exist today?
Numismatists estimate that approximately 1,500 to 2,000 coins survive today in all grades combined. The vast majority are found in well-worn grades from About Good-3 to Fine-12. Fewer than 40 Mint State examples are known to exist.
Where is the 'S' mintmark located on a 1901-S Barber Quarter?
The 'S' mintmark is located on the reverse side, centered directly beneath the tail feathers of the heraldic eagle and above the 'R' and 'D' of 'QUARTER DOLLAR'.
How can you detect an added 'S' mintmark counterfeit?
Because a common 1901 Philadelphia quarter costs about $20 while an authentic 1901-S costs $4,500 to $550,000, counterfeiters frequently cut an 'S' from an inexpensive 1899-S or 1900-S quarter and solder or emboss it onto a 1901 Philadelphia coin. Authentic specimens can be verified by matching the mintmark shape and placement to one of the two documented genuine San Francisco reverse dies.
What are the grading checkpoints on a Barber Quarter?
The primary high points are the word 'LIBERTY' on Miss Liberty's headband on the obverse, the hair above her forehead and ear, and the eagle's breast feathers and wing tips on the reverse. A grade of Good-4 requires full rims and a readable date, while Very Fine-20 requires at least three clear letters in 'LIBERTY'.
What is the weight, diameter, and silver composition of the 1901-S Barber Quarter?
The coin weighs 6.25 grams (96.45 grains), measures 24.3 millimeters in diameter, and features 110 reeded grooves on the edge. It contains 90% silver and 10% copper (0.18084 troy ounces of pure silver).
Why were so few quarters minted in San Francisco in 1901?
In 1901, the San Francisco Mint was overwhelmed by massive commercial orders for silver dollars and gold eagles. Quarter production was treated as an afterthought and was permanently shut down after striking just two small batches totaling 12,624 pieces in late spring 1901.