The ornamental design for a letteropener in the form of a lower caselettere, as shown.
FIG. 1 is a perspective view of the letter opener of the invention in the
form of a lower case letter e. FIG. 2 is a front elevational view thereof.
FIG. 3 is a left side elevational view thereof. FIG. 4 is a right side
elevational view thereof. FIG. 5 is a rear elevational view thereof. FIG.
6 is a top plan view thereof; and, FIG. 7 is a bottom plan view thereof.