Crossbow bolts, 15th century

The set of monuments consists of 433 fins, 170 mainsails and 165 wooden darts. The find belongs to one of the largest deposits of this type from the territory of today's Polish lands. The discovery was made in 1964 in the tower of St. Piotr during research conducted by Professor Jerzy Rozpedowski (1929-2012) from the Institute of History of Architecture, Art and Technology of the Wrocław University of Technology. The first batch of arrows was found under the floor of the guard floor of the tower, the second in the wall of the staircase leading to the first floor of the defense posts. Bolt heads mainly rhomboidal, provided with round sleeves. The lengths of the arrowheads presented in the catalog are 8.1-10 cm, max. blade width 1-2 cm, blade thickness 0.7-1.1 cm, maximum sleeve diameter 1.4-1.6 cm. The fins are made of oak wood with an average length of approx. 33 cm and a diameter of 1.2 cm. Each spar has two grooves for attaching the ailerons. They were made of thin planks of linden wood.