Federal Waterfowl Errors & Unusual
RW1 (1934-35) Pair Imperforate Horizontally (Type I)
RW1 (1934-35) Bock of Eight Imperforate Horizontally with gum on the Obverse (Type I)
RW1 (1934-35) Pair Imperforate (Type II)
RW2 (1935-36) Block of 12 Mispeforated
RW11 (1944-45) Bottom Plate Number Single Gummed on Obverse and Reverse
RW11 (1944-45) UL Block of Four with Paper Fold
RW13 (1946-47) with Paper Fold
RW14 (1947-48) Gummed on Obverse and Reverse
RW15 (1948-49) UL Corner Single with Fully Perforated Selvage at Left
RW17 (1950-51) Top Plate Number Single Gummed on Obverse and Reverse
RW17 (1950-51) with Fully Perforated Selvage at Right
RW18 (1951-52) with Fully Perforated Selvage at Bottom
RW19 (1952-53) Misperforated
RW19 (1952-53) Top Plate Number Single Misperforated
RW20 (1953-54) LR Corner Single with Paper Fold
RW21 (1954-55) Misperforated
RW20 (1953-54) used with fully perforated selvage at bottom and part of adjoining stamp
RW21 (1954-55) Misperforated
RW21 (1954-55) Bottom Plate Number Single Misperforated
RW22 (1955-56) UL Corner Single with Fully Perforated Selvage at Top
RW24 (1957-58) Reverse Inscription Inverted
RW25 (1958-59) Reverse Inscription Inverted
RW26 (1959-60) Reverse Inscription Inverted
RW27 (1960-61) With Missing Ink Inside Doubled Left Frame Line
RW27 (1960-61) with Partial Ink Wipe at UR
RW27 (1960-61) UR Plate Number Single with Major Ink Wipe
RW29 (1962-63) Missing Reverse Inscription (Unused)
RW32 (1965-66) with Gum and Inscription on Obverse
RW34 (1967-68) with Major Paper Fold
RW41 (1974-75) UL Plate Number Block with Paper Fold and Inscription on Obverse
RW38 (1971-72) with Major Shift
RW35 (1968-69) Missing Reverse Inscription (Unused – Disturbed Gum)
RW43 (1976-77) with Major Shift
RW42 (1975-76) with Shift
RW49 (1982-83) LR Plate Number Single with Major Shift
RW46 (1979-80) Missing Reverse Inscription (Unused)
RW44 (1977-78) with Complete Offset on Reverse
RW52 (1985-86) UL Plate Number Single with Major Shift
RW52 (1985-86) Paste-Up Block of 20 Missing Light Blue at Top
RW48 (1981-82) with Major Shift
RW53 (1986-87) Missing Black
RW70 (2003-04) UL Corner Single Missing Inscription
RW52 (1985-86) with Major Shift
RW58 (1991-92) Missing Black Engraving
RW72b (2005-06) Souvenir Sheet Imperforate Below Stamp