The ornamental design for a surfboardvalance, as shown and describe in the accompanying figures.
FIG. 1 is a perspective view of a valance showing my new design. The broken line drawing of a window and broken line markings on the front surface of the valance are for illustrative purposes only and form no part of the claimed design.
FIG. 2 is a front elevation view thereof. The broken line drawing of a window and broken line markings on the front surface of the valance are for illustrative purposes only and form no part of the claimed design.
FIG. 3 is a rear elevation view thereof. The rear surface is unornamental and forms no part of the claimed design.
FIG. 4 is a left elevation view thereof. The broken line drawing of a bracket and window is for illustrative purposes only and forms no part of the claimed design.
FIG. 5 is a right elevation view thereof. The broken line drawing of a bracket and window is for illustrative purposes only and forms no part of the claimed design.
FIG. 6 is a top plan view thereof. The broken line drawing of a bracket and window is for illustrative purposes only and forms no part of the claimed design; and,
FIG. 7 is a bottom plan view thereof. The broken line drawing of a bracket and window is for illustrative purposes only and forms no part of the claimed design.