For your consideration, a colorful abstract mixed media work by listed German American artist Ulfert Wilke, circa 1976.

　　The work is titled Plus & Minus Bicentennial and is watercolor, ink and applied paper on paper, signed and dated at lower right.

　　The piece is in overall good vintage condition with some mild wear to the frame and minimal dust debris under the glass at the lower right corner.

　　**Signature required for delivery.**Frame measures 11.25 x 13.25 inches, painting measures 7 x 8 7/8 inches.