The ornamental design for a trophydisplay, as shown and described.
FIG. 1 is a perspective view of a trophy display.
FIG. 2 is a front elevation view thereof.
FIG. 3 is a rear elevation view thereof.
FIG. 4 is a right side elevation view thereof.
FIG. 5 is a left side elevation view thereof.
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The dash-dash broken lines shown in the drawings illustrate environmental structure. The dash-dot broken lines shown in FIGS. 1 and 6 illustrate the bounds of the claim. The broken lines form no part of the claimed design.