what are the different quantities of all the stamp sets issued?
20,000, 20,000, 15,200, 290,000, 16,750, 30,000, 31,750, 114,430, 46,250, 51,000, 41,350, 47,500, 27,330, 38,350, 60,950, 34,250
which of these is the least?
15,200
what stamps set was it for?
19th commonwealth parliamentary conference