The 1909 Barber quarter holds the distinction of being the key date of the Barber quarter series. Only 119,000 of these coins were struck; 117,000 at the Philadelphia Mint and 2,000 at the San Francisco Mint. Because of its low mintage, the 1909 quarter is one of the most valuable coins in the Barber quarter series.
In G-4 grade, the 1909 Barber quarter is valued at $160. In VG-8 grade, it is worth $325. Fine-12 specimens can sell for $1,200, and Extremely Fine-40 examples for $6,500.
Because the 1909 quarter is a key date coin, it is important to have it authenticated and graded by a reputable coin grading service before buying or selling it.