"'La Navigazione Aerea' (Aerial Navigation). One of a set of trade cards showing the dirigibles 'Nulli Secundus' ('Second to None') and its successor. The 'Nulli Secundus' was the first British Army airship. Constructed at a Farnborough balloon factory, its maiden voyage was in September 1907, followed by a flight over London in October 1907, when it set a world record by staying airborne for 3 hours 25 minutes. The second airship, 'Nulli Secundus II', was larger but was destroyed on its first flight. The Liebig company produced sets of trade cards to promote their meat extract, a cheap and nutritious product invented in 1847 by chemist, Justus von Liebig. The meat extract was produced from 1865 at the Fray Bentos-Liebig processing plant set up in Uruguay. 1,863 sets of cards were produced continuously from 1872 until 1975 by which time the company had joined with Brooke Bond to become Brooke-Bond Oxo and was owned by Unilever. "
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