Experimental Form 1 (Licence to use Wireless Telegraph), 1905
1905
1905
2005
1946
1864
circa 2014
2021
1946
circa 2014
1933
unknown
circa 2014
1869
1908
1906
1924
1944
1890-1922
circa 2014
1869
1924
1869
1886
1875
1913
1914
1897
1924
1869