Display screen or a portion thereof with an animated graphical interface

FIG. 1 is a front view of a display screen or portion thereof with an animated graphical interface showing a first image in the sequence showing our new design;

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a fourth image thereof;

FIG. 5 is a fifth image thereof;

FIG. 6 is a sixth image thereof;

FIG. 7 is a seventh image thereof;

FIG. 8 is an eighth image thereof;

FIG. 9 is a ninth image thereof; and,

FIG. 10 is a tenth image thereof.

The dashed lines, broken text, and broken graphics illustrate portions of the display screen or portion thereof with an animated graphical interface that form no part of the claimed design. The appearance of the animated images sequentially transitions between the images shown in FIGS. 1-10 . The process or period in which one image transitions to another forms no part of the claimed design.