Identification guide for design numbers on United States stamped envelopes, wrappers, and letter sheets
six cents

(updated 13 December 2014)



There are 18 designs of indicia whose face value is six cents. Seven of these designs are distinctive enough that they can be identified by examining the images immediately below. The remaining 11 designs feature a bust of Abraham Lincoln (4 designs), a bust of George Washington (5), or a large numeral inside an oval (2).
   For a key to the Lincoln designs click here.
   For a key to the Washington designs click here.
   For a key to the large numeral designs click here.

Statue of Liberty head
design U107
 printed in light green on white paper and diagnostic for Scott #551; or printed in dark gray-green on white paper and diagnostic for Scott #551a
 
Moby Dick
design U108
 =  Scott #U554 (printed in blue on white paper)
 
White House Conference on Youth
design U109
 =  Scott #U555 (printed in light blue on white paper)
 
Non-profit Organization
design U155
 =  Scott #U609 (printed in green-blue on white paper)
 
single-propellered airplane
design UC2
   printed in orange on white paper and shared by Scott #s UC3 (die 2a), UC4 (die 2b), UC5 (die 2c), and UC6 (die 3), plus UC10 (die 2a, revalued to five cents), UC11 (die 2b, revalued to five cents), UC12 (die 2c, revalued to five cents), UC13 (die 3, revalued to five cents), UC27 (die 2a, one-cent surcharge), U28 (die 2b, one-cent surcharge), and U29 (die 2c, one-cent surcharge).
 
DC-4 Skymaster
design UC3
   printed in carmine on white paper and shared by Scott #s UC18, UC20a (erroneous six-cent revaluation), and UC30.
 
flying eagle
design UC6
   printed in red on white paper and diagnostic for Scott #UC25.


- - - - -
Key to designs that show a bust of Abraham Lincoln:
Question 1: Do the words "War Dept" appear near the top of the design? (choose an answer below)

     yes (go to Question 3)
 
     no (go to Question 2)


Question 2: Is the back of Lincoln's neck long or short? (choose an answer below or return to the previous question (#1) you answered)

     long You have identified design U26, printed in dark red and shared by Scott #s U85 (white paper), U86 (amber), and U87 (cream), or printed in vermilion and shared by Scott #s U85a (white paper), U86a (amber), and U87a (cream).
design U26
 
     short You have identified design U48, printed in red and shared by Scott #s U181 (white paper), U182 (amber), U183 (cream), and U184 (fawn), or printed in vermilion and shared by Scott #s U181a (white paper), U182a (amber), and U183a (cream).
design U48


Question 3: Is the back of Lincoln's neck long or short? (choose an answer below or return to the previous question (#1) you answered)

     long You have identified design UO11, printed in dark red and shared by Scott #s UO23 (white paper), and UO24 (cream).
design UO11
 
     short You have identified design UO20, printed in red and shared by Scott #s UO56 (white paper), UO57 (amber), and UO58 (cream).
design UO20


- - - - -
Key to designs that show a bust of George Washington:
Question 1: Is the denomination expressed in words only (i.e., "six cents")? (choose an answer below)

     yes (go to Question 2)
design U6

design U12
 
     no (go to Question 3)
design U14

design U21

design U93


Question 2: Are there two stars in the design (one on the left side and one on the right)? (choose an answer below or return to the previous question (#1) you answered)

     yes You have identified design U12, printed in red and shared by Scott #s U30 (white paper) and U31 (buff).
design U12
 
     no You have identified design U6, printed in red and shared by Scott #s U11 (white paper) and U12 (buff), or printed in green and shared by Scott #s U13 (white paper) and U14 (buff).
design U6


Question 3: Are the numeral 6's enclosed? (choose an answer below or return to the previous question (#1) you answered)

     yes (go to question 4)

design U14

design U93
 
     no You have identified design U21, printed in pink and shared by Scott #s U62 (white paper) and U63 (buff), or printed in purple and shared by Scott #s U64 (white paper) and U65 (buff).
design U21

Question 4: Are there 6's at midnight of the design? (choose an answer below or return to the previous question (#3) you answered)

     yes You have identified design U14, printed in pink and shared by Scott #s U38 (white paper) and U39 (buff).
design U14
 
     no You have identified design U93, printed in orange and shared by Scott #s U529 (white paper; die 7), U530 (amber; die 7), and U531 (blue; die 7).
design U93



- - - - -
Key to designs that show a large numeral in an oval:
Question 1: How high is the numeral 6? (choose an answer below)

     91/2 mm You have identified design UO3, printed in black on lemon paper, and diagnostic for Scott # UO4.
design UO3
 
     101/2 mm You have identified design UO6, printed in black and shared by Scott #s UO12 (lemon paper) and UO13 (white).
design UO6

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