Glass for a watch caseback

FIG. 1 is a first front view of a glass for a watch caseback showing my new design;

FIG. 2 is a first rear view thereof;

FIG. 3 is a second front view thereof;

FIG. 4 is a second rear view thereof;

FIG. 5 is a third front view thereof;

FIG. 6 is a third rear view thereof;

FIG. 7 is a fourth front view thereof;

FIG. 8 is a fourth rear view thereof; and,

FIG. 9 is a side view thereof.

The appearance of the image sequentially transitions between views shown in FIGS. 1 , 3 , 5 and 7 and FIGS. 2 , 4 , 6 , and 8 . The process or period in which one images transitions to another image forms no part of the claimed design.