The archaeological excavation conducted in Prague – New Town in 2013 at the intersection of today’s Národní třída – Mikulandská streets, i.e. in the medieval New Town, yielded, among other things, the unique find of a late medieval long sword. The sword was found in an oval feature of an unknown function (definitely not a cesspit), whose demise dates to the turn of the 16th century. The sword, which can be classified as an Oakeshott type XVIIIb, T14, 12a, can be dated to the period between the second half of the 15th century and the beginning of the 16th century. These and other findings come from an analysis of the find situation, from metallographic examination, and mainly from detailed typo-chronological analysis of the weapon and marks, by which the sword was signed.