The first one looks like it's been taken at the "Amsterdam Yacht Show", maybe in 1959 (it seems to be written on the poster .
The second picture is more interesting... From the informations I got (many thanks Fred!), the big yacht to which the Albatross is hanged to belonged to the Prince Rainier of Monaco. Which confirms the information that he owned several Albatross runabouts...
Well, I'll have to take care of this little boy if I want to play with it next summer...