EFO C3 Mint Fast Plane Variety – Blue Plane Touches Outer Red Frame Line Updated on September 18, 2023 By admin Comments Off EFO #C3 Mint “Fast Plane” Variety. Blue Plane Touches Outer Red Frame Line! Share Tweet By admin You May Also Like C5, Mint VF+ NH 16¢ Very Pretty & Fresh Stamp Stuart Katz U. S. Mint Stamp Scott #C10a 10c Air Mail Booklet Pane Superb. Never Hinged. Gem