pretty sure my new to me shave king is all brass. EDIT: the head may be plated brass. but the handle is aluminum.
From WCS: "The TTO razors are brass with a nickel and chrome plating. This is true for the heads as well. The 3 piece razors have a brass handle and 3 piece head is a zinc alloy which is then chrome plated." So the TTO's by Parker are all Brass, but the 3 piece razors are not.