which year had the most stamps issued?
1973
Stamp issue date Stamp set #cards Card set ref Qty. Issued
16 May 1973 County Cricket, 1873–1973 one PHQ 1 20,000
15 August 1973 400th Anniversary, birth of Inigo Jones one PHQ 2 20,000
12 September 1973 19th Commonwealth Parliamentary Conference one PHQ 3 15,200
14 November 1973 Royal Wedding (The Princess Anne) one PHQ 4 290,000
27 February 1974 British Trees one PHQ 5 16,750
24 April 1974 Fire Service Anniversary one PHQ 6 30,000
10 July 1974 Medieval Warriors four PHQ 7 31,750
9 October 1974 Winston Churchill Centenary one PHQ 8 114,430
19 February 1975 Bicentenary, birth J. M. W. Turner one PHQ 9 46,250
23 April 1975 European Architectural Year three PHQ 10 51,000
11 June 1975 Sailing one PHQ 11 41,350
13 August 1975 150th Anniversary of Public Railways four PHQ 12 47,500
22 October 1975 Jane Austen Bicentenary four PHQ 13 27,330
28 April 1976 Social Reformers one PHQ 14 38,350
2 June 1976 American Bicentenary one PHQ 15 60,950
30 June 1976 Roses four PHQ 16 34,250
csv/203-csv/153.tsv