RW44var, 1977 Ross' Geese, (2) LL PNS's no. 173206, both w/color shifts, L stamp minor, R stamp shows progressive white shift (see Gooses' back), reeds also affected, VF NH Cat($25) (Image)

$80

RW47var, 1990 Mallards, LL & LR PNS no. 173492, R stamp w/HUGE green color shift on drake's head, VF NH (Image)

$90

RW49var, 1982 Canvasbacks, LL & UR PNS's no. 173669 w/color shifts, in reeds, L mgn & green, note R wing of hen is green and other variations as well, VF-XF NH Cat($25) (Image)

$80

RW52v2, 1985 Cinnamon Teal, color shift creates "pool of blood", normal stamp included, dramatic example of this variety, VF NH Cat($50) (Image)

$150

RW64v1, 1997 Canada Goose, long-breast feather variety, incls regular issue and engraving error; recurring until corrected early in printing process, both VF-XF NH Cat($112) (Image)

$150

RW68Avar, 2001 Pintail, PSA w/SON dbl circle red cancel, "BETHANY BEACH DE 19930, JUL 30 2001 USPS postmark; unusual! XF (Image)

$50