Yeah Tom, Oz's flying monkeys was really my first thought too.
The hanging Balinese bat sculpture i have is indeed this same type oflong snouted face.
Just a disclaimer, when i say etch i am not referring to a deep etch, just a bath in some fruit juice to help remove and rust and gunk. More a cleaning than an etch i suppose. But i guess the acids in the juice do etch the blade to some degree.