Итоги голосования для комментария:
Подскажите пожалуйста, насколько широко в середине XVIII века в фехтовании использовался баклер.

Закончился в начале 17 века, если только вы не англичанин.

Given the strong connections between Medieval and Renaissance fencing methods, there does not seem to have been much more that was added to the sword and buckler method during the 16th century. Eventually, the sword and buckler method, increasingly irrelevant in European warfare seeing more and more firearms, became less convenient for urban wear as well. The quick-thrusting farther-reaching rapiers could often outmaneuver them in single combat and duel. The result was that the sword and buckler survived past the 17th century only in the old English schools of defence and then among the early 18th century “gladiator” prize shows.