Portion of towel bar

FIG. 1 is a perspective view of a portion of towel bar showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a perspective view of a second embodiment of my design.

The rear view is omitted and forms no part of the claimed design.

The dashed lines in FIGS. 1-4, and 7 are shown for environmental purposes only and form no part of the claimed design. The environmental subject matter has been omitted in FIG. 5 for clarity. The dotted lines shown in FIGS. 5 and 7 represent boundaries between claimed and unclaimed subject matter and form no part of the claimed design.