There are 6 designs of indicia whose face value is thirty-two cents, each of which is distinctive enough that it can be identified by examining the images below.

Liberty Bell	design U177	You have identified design #U177 shared by Scott #U632 (printed in greenish blue and blue on white paper) and #U638 (printed in greenish blue and blue on white security paper).
Spiral heart	design U181	You have identified design #U181 diagnostic for Scott #U637 (printed in red on light blue paper).
Shuttle and space station hologram	design U163	You have identified design #U163 diagnostic for Scott #U639 (printed in carmine-rose on white paper),
Save our environment	design U182	You have identified design #U182 diagnostic for Scott #U640 (multicolored on white paper),
1996 Atlanta Paralympic Games	design U183	You have identified design #U183 diagnostic for Scott #U641 (multicolored on white paper).
Great Seal of the United States	design UO37	You have identified design #UO37 diagnostic for Scott #UO88 (printed in blue and red on white paper).