Sheffield Silver and green spiral striped fountain pen

Silver and green spiral striped Sheffield Pen fountain pen made in the 1940s. The nib is a 14 carat gold nib from Oxford. Possibly a Danish product. For example, it has similarities to fountain pens made by Penol. Appears in good condition. Does not work. A new rubber sack must be inserted before the pen can absorb ink and write again. Dimensions: 12.2 cm