Made in England around 1980,  this ballpoint pen is finished in blue with a lustraloy cap, with a chrome plated Parker 'arrow' clip.  It measures 5.06"/129mm.

This ballpoint pen was made to complement the Parker 45 fountain pen of the same era. It has a "push cap" action. There is a clear imprint stamped around the edge of the cap reading "PARKER   MADE IN U.K".  It is fitted with a new medium point, blue Parker refill, which  available from good stationers.