The three cap badges at the top are of the airforces represented in the entry, the Royal Air Force, Royal Ceylon Air Force and the Royal Rhodesian Air Force.
The Entry badge at centre an eagle above the globe with the motto, " The World At Our Feet", It probably was at pass out!
The three circular images at the bottom, show an Aylesbury Duck representing the Freedom of Aylesbury parade of April 1956 on which the 76th were the senior entry present. The tank (T34) over a broken Hungarian flag is for the suppressed uprising of October 1956. The other circle shows the date period of the 76th at Halton, Jan 54 to Dec 56.
Finally the coloured rectangles around the window periphery represent the three wing colours.