Overview Other Details Product Description MINT, F-VF or Better & Never Hinged. Other Details The U21 envelope was issued in the small size only, with Border b(2). No Cut Squares, Full Corners, or Envelopes exist with border d(4). Product Videos Custom Field Product Reviews
Quick view Details USA Scott # UC 21 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $20.00 Add to Cart Quick view Details U.S. Scott # UC 19 1951 6c (Lined) on 5c (UC14) DC-4 Skymaster, Die 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.85 Add to Cart Quick view Details USA Scott # UC 21R 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1 Border b(2), "Rubber Die" Variety - Mint Cut Square (See Warranty) MSRP: Now: $22.50 Add to Cart Quick view Details U.S. Scott # UC 21R 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1, "Rubber Die" - Mint Envelope, UPSS Size 13 (See Warranty) MSRP: Now: $28.50 Add to Cart Quick view Details U.S. Scott # UC 20 1951 6c (Lined) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.85 Add to Cart Quick view Details U.S. Scott # UC 18 1950 6c DC-4 Skymaster, Type 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.65 Add to Cart Quick view Details U.S. Scott # UC 15 1946 5c DC-4 Skymaster, Die 2, Border d(4) - Mint Full Corner (See Warranty) MSRP: Now: $3.00 Add to Cart Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart ×
Quick view Details U.S. Scott # UC 19 1951 6c (Lined) on 5c (UC14) DC-4 Skymaster, Die 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.85 Add to Cart Quick view Details USA Scott # UC 21R 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1 Border b(2), "Rubber Die" Variety - Mint Cut Square (See Warranty) MSRP: Now: $22.50 Add to Cart Quick view Details U.S. Scott # UC 21R 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1, "Rubber Die" - Mint Envelope, UPSS Size 13 (See Warranty) MSRP: Now: $28.50 Add to Cart Quick view Details U.S. Scott # UC 20 1951 6c (Lined) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.85 Add to Cart Quick view Details U.S. Scott # UC 18 1950 6c DC-4 Skymaster, Type 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.65 Add to Cart Quick view Details U.S. Scott # UC 15 1946 5c DC-4 Skymaster, Die 2, Border d(4) - Mint Full Corner (See Warranty) MSRP: Now: $3.00 Add to Cart Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart ×
Quick view Details USA Scott # UC 21R 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1 Border b(2), "Rubber Die" Variety - Mint Cut Square (See Warranty) MSRP: Now: $22.50 Add to Cart Quick view Details U.S. Scott # UC 21R 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1, "Rubber Die" - Mint Envelope, UPSS Size 13 (See Warranty) MSRP: Now: $28.50 Add to Cart Quick view Details U.S. Scott # UC 20 1951 6c (Lined) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.85 Add to Cart Quick view Details U.S. Scott # UC 18 1950 6c DC-4 Skymaster, Type 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.65 Add to Cart Quick view Details U.S. Scott # UC 15 1946 5c DC-4 Skymaster, Die 2, Border d(4) - Mint Full Corner (See Warranty) MSRP: Now: $3.00 Add to Cart Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart ×
Quick view Details U.S. Scott # UC 21R 1952 6c (Solid) on 5c (UC14) DC-4 Skymaster, Die 1, "Rubber Die" - Mint Envelope, UPSS Size 13 (See Warranty) MSRP: Now: $28.50 Add to Cart Quick view Details U.S. Scott # UC 20 1951 6c (Lined) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.85 Add to Cart Quick view Details U.S. Scott # UC 18 1950 6c DC-4 Skymaster, Type 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.65 Add to Cart Quick view Details U.S. Scott # UC 15 1946 5c DC-4 Skymaster, Die 2, Border d(4) - Mint Full Corner (See Warranty) MSRP: Now: $3.00 Add to Cart Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart ×
Quick view Details U.S. Scott # UC 20 1951 6c (Lined) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.85 Add to Cart Quick view Details U.S. Scott # UC 18 1950 6c DC-4 Skymaster, Type 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.65 Add to Cart Quick view Details U.S. Scott # UC 15 1946 5c DC-4 Skymaster, Die 2, Border d(4) - Mint Full Corner (See Warranty) MSRP: Now: $3.00 Add to Cart Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart ×
Quick view Details U.S. Scott # UC 18 1950 6c DC-4 Skymaster, Type 1 Border b(2) - Mint Full Corner (See Warranty) MSRP: Now: $0.65 Add to Cart Quick view Details U.S. Scott # UC 15 1946 5c DC-4 Skymaster, Die 2, Border d(4) - Mint Full Corner (See Warranty) MSRP: Now: $3.00 Add to Cart Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart ×
Quick view Details U.S. Scott # UC 15 1946 5c DC-4 Skymaster, Die 2, Border d(4) - Mint Full Corner (See Warranty) MSRP: Now: $3.00 Add to Cart Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart ×
Quick view Details USA Scott # UC 22 1952 6c (Solid) on 5c (UC15) DC-4 Skymaster, Die 2 Border b(2) - Mint Cut Square (See Warranty) MSRP: Now: $3.00 Add to Cart