Scott #C9 – 1927 20¢ Airmail – Mint Plate Block of 6 - Plate No. 18892

Scott C9 – 1927 20¢ Airmail Plate Block of 6 - Mint Plate No. 18892

This mint plate block of six from Scott C9, the 1927 20-cent U.S. Airmail issue, showcases the iconic engraved “Map and Mail Plane” design from the early golden era of airmail. These blocks remain highly desirable for collectors specializing in Bureau of Engraving & Printing plate blocks, early U.S. airmail material, and Back-of-Book issues with intact selvage and plate numbers.

The block retains full selvage, clean perforations, and strong color, with Plate No. 18892 clearly visible. Mint multiples of C9 this sharp are increasingly scarce, especially in blocks larger than four. This piece displays beautifully and represents an excellent opportunity for collectors who prefer early airmail material in premium plate block format.

Key Details

• Scott Number: C9
• Issue Year: 1927
• Denomination: 20¢
• Color: Green
• Format: Mint Plate Block of 6
• Plate Number: 18892
• Printer: Bureau of Engraving & Printing (BEP)
• Printing Method: Intaglio (Engraved)
• Back-of-Book (BOB) Airmail Issue
• Original gum, mint condition; individual stamp impressions are crisp and well-defined
• Excellent piece for album display, investment portfolios, or advanced airmail collections

Design Notes

• Features the classic “Map of the United States with Biplane” motif
• Symbolizes the expansion of national airmail routes in the late 1920s
• Part of the foundational period of the U.S. Air Mail postal service
• Popular among collectors of aviation history, transcontinental airmail, and engraved U.S. classics

Condition & Grading

• This item has been evaluated using EZStamp's eGrade tool
• Received a VF 80 grade for centering and margins
• eGrade provides standardized measurement for buyer clarity (not authentication, but helpful for assessment)

Collector Appeal

• Strong choice for those collecting:
– Early U.S. Airmail blocks
– Plate number multiples
– BEP intaglio engravings
– 1920s Back-of-Book postal history
– High-quality display pieces with selvage

• Increasingly challenging to locate mint blocks larger than four in solid condition.
• Market demand stays steady due to crossover appeal: airmail, aviation, and classic engraved issues

Image Note

• The block pictured is the exact item you will receive
• Kept on trimmed album stock for safe handling — buyers may mount, frame, or integrate into their existing albums as preferred