![](https://coimages.sciencemuseumgroup.org.uk/53/732/large_thumbnail_1977_0624__0001_.jpg)
Experimental Form 1 (Licence to use Wireless Telegraph), 1905
1905
1905
2005
1855
1913
1906
1906
1890-1922
1944
1946
1869
1943
1869
2009
1914
1897
1908
1850-1859
1924
1946
1924
1933
1875
unknown
circa 2014
2021
1912-1913
1864
1942