Poly(vinylidene fluoride) form II is transformed to polar II under a high electric field. Servet and Rault [J. Phys. (Paris)40, 1145 (1979)] found few weak so‐called superlattice spots on the fiber diagram of polar II. In the present study these spots are clarified to arise from a new form, which is considered to be the intermediate structure between polar II (TGTG¯)nand form I (T)n, a conformationally incommensurate structure.