To ensure a nice clean shave, 18th century barbershops throughout England and France would have used this type oval pewter basin (with section cut out on brim) on all of their preferred customers.
So sit back, relax and let the 18th Century barber go to work. Hopefully your barber doesn’t go by the name of Sweeny Todd. If he does, you just might need more than an Oval Basin to take care of the mess…..