LOT-O260. For your consideration is an exceedingly rare and historically important original antique c.1961 H.M. Queen Elizabeth II official Royal Buckingham Palace Garden Party invitation to Lieutenant Commander Hoover, who was the Assistant Naval Attaché at the United States Embassy in the United Kingdom. Official royal Elizabeth II garden party invitation measures approximately 7.0" x5.0". Royal presentation invitation features an embossed gold gilt royal British Crown and Cipher ERII. Royal invitation is partially printed and manuscript hand-written. Museum quality. One of a kind. Guaranteed authentic.