Janesco cards appear to have been used in the early 1950s.  All are black and white RP cards.
 
 

	Arch Bay, Alderney		Corblets Bay, Lighthouse, Hannaine Bay, Crabby Bay from Fort Grosnez, and the Harbour.  1950
	Fort Clonque, Alderney		Hanging Rock, Fort Essex from Raz Island, Alderney
	Longis Alderney		Rue Grosnez, Alderney (Victoria Street - archaic usage of original name)
	New Harbour, Alderney		Alderney from Burhou