Luc-sur-Mer is Sword Beach at the junction of the Peter/Oboe sectors . It was not a D-Day objective and in fact was the point where the counter-attack by 21st Panzer Division actualy reached the coast on June 6th. It was not taken or fought over on D-Day and as far as I am aware was simply left by the retreating Germans on the 7th.
When I want to find a wartime view of a French town I google the name with 'cartes Postal' and you get lots of hits and most of the hits are collectors sites that have their own searchable collections.
For instance Luc sur mer brought me this
http://www.junglekey.fr/wiki/definit...de_Luc-sur-Mer
and the photo on the right is the station 'crossroads' (carefour de la gare). If it is the one you seek I do not know.
The bottom link on the same page had lots of photos for Lion sur Mer railway and I have no doubt a trawl of the many French sites you find will turn up exactly what you are seeking.
Another hit
http://www.communes.com/basse-norman...ciennes,4.html