A brass cupping vessel used in North Africa for wet cupping

Wet and dry cupping (the former for bleeding) has been used worldwide for thousands of years. The North African Moors commonly shave both their heads as well as their groins. Having scarified the area with cuts using fleams and scarificators, barber surgeons would then apply cups like these to remove blood. The vacuum created  by sucking on the side pipe is sealed with chewed grass or gum. The bleeding instruments and and the environment are not sterile and tend to be unhygienic which provides potenital vector for the spread of disease,  but the practice remains as commonplace today as it was in the 18th century. Because the devices have changed little it can be difficult to date them but this one is probably 19th century