Issued by Hongkong Post in 2012, this is a set of six different cards, each showing a different breed of dog with corresponding Maximum Card stamp.   Of the six sets we have available now, two have special “Working Dogs in Government Services” postmarks; two have special “Philatelic Bureau” postmarks; and two have “GPO” postmarks.  Prices are the same regardless.  Each set in original Hongkong Post cellowrap.  One of the dogs in the set is the German Shepherd, used by the Correctional Services Department.  Grades: 1