16c Green, 24c Carmine Rose & Blue, 1918 Air Post (C2-C3).
Balance of covers and pieces, No. C2 includes six covers postmarked Jul. 15, 1918 First Day of new 16c rate,
five are legal-size, C3 includes three legal size covers, one half cover and two on pieces, each with "Air Mail Service Wash. N.Y. Phila. May 15, 1918 First Trip" datestamp in three different colors, mixed condition with some faults including one C2 and one C3 well-worn, overall Fine appearing group, Scott Retail for just the nine full covers $7,050.00
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