Analysis of information sources in references of the Wikipedia article "River Witham sword" in English language version.
This example was found in the river Witham, Lincolnshire, in July 1825, and was presented to the Royal Archaeological Institute by the registrar to the Bishop of Lincoln.
165 mm (6½ in.) across the hilt, it has a double-edged blade and
Weighing 1.2 kg (2 lb 10 oz), and measuring 964 mm (38 in.) in length and 165 mm (6.5 in.) across the hilt, it has a double-edged blade and, if struck with sufficient force, could have sliced a man's head in two...
It is likely that the blade was manufactured in Germany, which was the centre of blade manufacture in Europe at this time.
Overall length: 960 mm
Blade length: 815 mm
On one side, it also bears an inscription:+NDXOXCHWDRGHDXORVI+
The 13th-century weapon was found in the River Witham in Lincolnshire, in the United Kingdom, in 1825.