The ornamental design for a necktie, as shown and described.
FIG. 1 is a front elevational view of a necktie showing my new design with
the detachable neckband detached and shown as broken for convenience of
illustration;
FIG. 2 is a side elevational view of the necktie without the detachable
neckband;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a rear perspective view in which the neckband is shown as it is
FIG. 1.