European Executioner Sword

[Emanuel]

Hello,

First of all, I do not care about how executions were carried out or about their outcomes. I am interested in the shape of a particular Mediaeval executioner sword that might have been used in continental Europe in the 14th-15th centuries.

This is prompted by the reading some years ago of a book entitled "The French Executioner." The protagonist of the novel used a straight double-edged sword with an almost fully square tip. While he employed such a sword in his job, it could also be used as a regular offensive weapon.
Ann Bolein is said to have been executed by a renowned French executioner using a special sword. Did such things exist, and if so could anyone point out some examples?

Thanks and regards,
Emanuel