Here is a factory-original fixed (non-telescoping) antenna from a '73 Mercury Comet.  Has a 31" mast, and this type of antenna was used in a wide variety of Ford & Mercury cars of the 1970s.  Is in good, undamaged, straight condition.  The stainless cover for the base is undamaged, as is the cable assembly.  Includes two of the four original mounting screws.  Buyer to pay $20 shipping in the US.  Will be shipped in a rigid package for safety.  International buyers, please inquire for a shipping quote.