Beautifully engraved Certificate from the Hovermarine Corporation issued in 1973. This historic document has an ornate border around it with a vignette of the Hovermarine Logo. This item has the printed signatures of the company's officers and is over 29 years old. Hovermarine is known for building the first commercially built side-wall hovercraft. Major developments were still taking place in 1972 / 73 but the design proved very reliable and over 100 craft were built, about 50 of which are still in operation around the world today in Hong Kong, Iraq, Malta, Senegal, Brazil, Jordan, Singapore, USA, India, Croatia, Japan and Turkey.