Porcelain Enema Pump. The “Veritable Irrigateur, Systeme du Dr Eguisier”. One of a collection on 4 Dr. Eguisier Enema pumps that I have for sale. See last photo for the other models that are listed and priced separately.
This model is a reasonably good example in Nickel plated brass and porcelain with blue coloured label and stripes. No chips or cracks to the porcelain, but the nickel plating is generally poor, particularly on the lid. Maximum height including handle 25.5 cm.