For your consideration, here is a Vintage Small Size Aluminum Metal Funnel.  It is not marked with a maker.  It has some wear and dents in it.  The top opening has a diameter of 2 5/8 inches.  The bottom hole has a diameter of 3/8's of an inch.  It is 2 1/4 inches long.  It will be mailed in a box for protection.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (564.927n-.6kx1)