Display mount for case

The design consists of the features of shape, ornament and configuration of the DISPLAY MOUNT FOR CASE shown in the drawings. The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. Drawing(s)/photograph(s) of the design is/are included, in which: Figure 1 is a front perspective view of the DISPLAY MOUNT FOR CASE embodying the design; Figure 2 is a front elevational view of Figure 1; Figure 3 is a rear elevational view of Figure 1; Figure 4 is a right side elevational view of Figure 1; Figure 5 is a left side elevational view of Figure 1; Figure 6 is a top plan view of Figure 1; and Figure 7 is a bottom plan view of Figure 1.