Parker Duofold Sr. (c 1920) Early Bandless, smooth BHR. Preceded the bandless RHR. Largest "DUOFOLD" imprint. GF trim. clip Nib: Parker Duofold. Medium with semi-flex slight flex. Measures: 5.5". Condition: NrM. This early bandless black hard rubber pen is rarer than the red hard rubber counterpart and is highly collectible