Barber Quarters are a series of coins struck by the United States Mint from 1892 to 1916, designed by Charles E. Barber. The 1906 Barber Quarter features the obverse portrait of Liberty and the reverse design of an eagle with a shield. The coin's composition is 90% silver and 10% copper, and it has a diameter of 24.26 mm. The 1906 Barber Quarter is collectible due to its historical significance, design, and variations in mintmark, which can affect its value among numismatists.

Item Denomination Series Year Mint
1906-D (Denver) Barber Quarters 25¢ (Twenty Five Cents, Quarter) Barber Quarters 1906 Denver
1906-O (New Orleans) Barber Quarters 25¢ (Twenty Five Cents, Quarter) Barber Quarters 1906 New Orleans
1906-P (Philadelphia) Barber Quarters 25¢ (Twenty Five Cents, Quarter) Barber Quarters 1906 Philadelphia
1906-P (Philadelphia) Barber Quarters 25¢ (Twenty Five Cents, Quarter) Barber Quarters 1906 Philadelphia