All of these works are signed, numbered editions of 50. The Aquatint,Visiteur divins a l'Ateilier, was done in 1955, while Nature Morte a la Bouteille and Carnaval were produced in 1962 and 1965 respectively.
If you have the money, these are likely good investments. I haven't looked into the ups and downs of the Picasso market but, over time, I suspect any of his art will become more, rather than less valuable. He was prolific but these are not sketches he made on a napkin (I have seen those for sale!)