Electronic device shell

FIG. 1 is a front perspective view of an electronic device shell showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is an elevation view showing a front thereof;

FIG. 4 is an elevation view showing a rear thereof;

FIG. 5 is an elevation view showing a right side thereof;

FIG. 6 is another elevation view showing a left side thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown in FIGS. 6 and 8 illustrate environment which forms no part of the claimed design.