Obuch
The obuch, obuszek or obuszysko is a type of melee weapon, very similar to a horseman's pick () but differing from it with a curved beak opposite the hammer. In Poland, it was customary to distinguish this type of weapon by the type of tip: if it has a sharp, perpendicular beak, it is a horseman's pick; if the beak is curled downward, it is an obuch; if it has an axe head, it is a . Most often there was a hammer on the opposite side of the blade. Used from the 16th to the 18th century by the Szlachta (Polish nobility), it often had a shaft length of  and was carried like a staff and was often bound in velvet and gold twine. It was a weapon often used in duels and brawls. It was supposed to be safer than a horseman's pick, from which it was made, but the difference was not great, for which reason it was forbidden to bring this type of weapon to sejmiks and also to some churches. In old Poland, wearing an obuch was so common (for nobles) that it spawned the saying:  ("Don't leave your bedding without a karabela, don't leave your bed without an obuch"). It was a common secondary weapon to a Polish sabre (karabela). Sources 
 Polish Renaissance Warfare: obuch, hammer, czekan
 Zdzisław Żygulski (junior), 1982: Broń w dawnej Polsce na tle uzbrojenia Europy i Bliskiego Wschodu. Warszawa: PWN. European weapons
Hammers
Renaissance-era polearms
Renaissance-era weapons
Weapons of Poland