Erasermate

Erasermate (known as the Replay in Europe and Brazil) is an erasable pen introduced by the Paper Mate division of the Gillette Company in 1979.

A disposable version called Erasermate 2 was subsequently introduced, with an appearance similar to the non-erasable Write Bros. stick pen, except for a slightly larger girth, and of course the black eraser, affixed to the pen's cap.

The eraser was held in place by the force exerted by the cylindrical recess of the pen cap.

In 1979/80 Paper Mate introduced two retractable versions of the Erasermate; called the TW200 and TW400, they carried retail prices of $7.50 and $9.50 respectively.

To close, the user would twist it the other direction hiding the ink and eraser inside the pen's body.