Black Parker Duofold fountain pen

Black Parker Duofold Reg. T. M. 6 M. I. D (Made In Denmark) fountain pen. The "button" on the top of the cap is missing. Otherwise, it appears in good condition with associated original parts. Including a beautiful 14 carat Parker Duofold gold tip (nib). The fountain Parker pen works fine with previously inserted rubber sack. L. 12.5 cm