• Scott #1810a United States Mint Sheet
• 15¢ National Letter Writing Week Mint Sheet (60 stamps)
• Issue Date: 2/25/1980 (Washington DC)
• Mint Never Hinged
• Perf 11, Unwatermarked
• Catalog Value: $27.15 (2022 EZStamp)
• 10% Discount if you purchase 2 or more! 
• $4 Shipping in U.S., $10 Shipping International