The 1942 Washington Quarter is a 90% silver coin, minted during WWII.
Its value can range from $4.50 to $100+, depending on condition and mint mark.
Key mint marks: 'D' for Denver, 'S' for San Francisco, none for Philadelphia.
Uncirculated coins or those with an 'S' mint mark generally fetch higher prices.
Look for Full Head detail - a sign of a well-struck, valuable coin.
Special varieties, like the 'Double Die' error, can be extremely valuable.
Protect your coin from wear; use holders or albums for preservation.
Consult a professional for grading or attend coin shows for insights.
Stay updated with coin catalogs and online resources for current market values.