The year 1966 was the last year that E.M.I. produced 78 rpm records of international artists, and until 1971 there were 78 rpm records of national artists.
I don't know if this was the first release of this songs.
Because I can see the layout colors of the label (gold printing on light-red), the numerical sticker (to put in a record tray) that was introduced in the 50's and the light-brown dog, that this record was released in 1951.