1961, Siebe Gorman advertises a new range of Essgee Mid-Season foam neoprene wetsuits in Triton. 1961: Siebe Gorman takes over the diving gear maker firm Heinke. A few helmets were given the tag of "Siebe-Heinke", but eventually the name Heinke completely disappeared. The first Siebe-Heinke advertisement for the Heinke Merlin regulator appears in the December 1961 issue of the Royal Navy Diving Magazine. 1962: In January, Siebe Gorman announces its merger with Heinke to Triton readers. From May 1962 to April 1963, the company advertises "the new seamless Siebe, Heinke 'dip suit'" in Triton. The Siebe-Heinke Dip Suit, which makes its début at the London Boat Show in January 1962, is an economically priced lightweight dipped-latex dry suit with roll-seal waist entry, primarily designed for use by "skin-divers" but also readily adaptable for use by dinghy sailors, fishermen, canoeists and water skiers. The suit appears in Lillywhites underwater catalogues from 1962 to 1964. With effect from December 1962, Collins and Chambers Ltd. of London E14 are appointed sole UK spares distributors and servicing engineers for all Siebe-Heinke aqualung demand valves. Collins and Chambers subsequently become stockists of Siebe-Heinke equipment. 1963: Siebe-Heinke Blue Book of underwater swimming 1963 published. It comes with an introduction and a catalogue of underwater swimming equipment comprising not only the existing inventories of Siebe Gorman and Heinke but also new products including the "Dip" suit and the "Mercury mouth-held demand valve manufactured in plastic", which was also advertised in Triton from May 1963 to June 1964. 1964: Siebe-Heinke Blue Book of underwater swimming 1964-65 published with content broadly resembling the 1963 edition but with an expression of regret that "owing to manufacturing difficulties we can no longer supply complete Dip suits". 1965: Robert Davis dies at home on 29 March 1965 at the age of 94. Siebe Gorman issues two leaflets entitled Aqualung equipment. The first focuses on the company's breathing sets, while the second covers its range of dry underwater swimsuits, foam neoprene wet suits, woollen underclothing, gloves, footwear, weightbelts and weights, underwater knives and books. In the October 1965 issue of Triton, Siebe Gorman places an advertisement alerting readers to the company's contribution to the 1965 James Bond film Thunderball: "A large proportion of the underwater scenes for the film 'Thunderball' were shot in a 150′ × 150′ tank in Pinewood. As the leading British exponents of diving, Siebe Gorman were asked to provide