I found these 2 other poster examples, also printed by Aussel in Paris.
This one is from 1930, and only has the printer's name and city imprinted on the bottom border:
And this poster is from 1950. It also has the Aussel name and city (Paris) but also the same, added info that you poster shows (Mar 49-08). So this could suggest that your Laurel & Hardy poster is also from that same early 1950s time frame.