
1) American brand 2) Construction toy 3) Cultural magazine 4) Czech brand 5) German monthly magazine
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https://www.crosswordclues.com/clue/merkur

Mercury (the planet or the Roman god, not the metal); airborne invasion of Crete 1941.
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http://en.wikipedia.org/wiki/Glossary_of_German_military_terms
[magazine] Merkur, subtitled Deutsche Zeitschrift für europäisches Denken, is a German intellectual magazine, published monthly in Stuttgart by Klett Cotta. The magazine has been published since 1947 and has an edition of approximately 4,800 copies as of July 2011. As of August 2011, more than 750 issues of the journal have been published...
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http://en.wikipedia.org/wiki/Merkur_(magazine)
[mountain] Merkur is a mountain in the Northern Black Forest, Baden-Württemberg, Germany. It is located between Baden-Baden and Gernsbach. A funicular railway, the Merkurbergbahn, climbs the mountain from Baden-Baden. An observation and radio tower stands atop the Merkur. The mountain was named after Mercury, the Roman god of trade. An anc...
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http://en.wikipedia.org/wiki/Merkur_(mountain)
[toy] Merkur refers to a metal construction set built in Czechoslovakia (later the Czech Republic). It was also referred to as Constructo or Build-o in English-speaking countries and Tecc in the Netherlands. Unlike Erector/Meccano, Märklin, and Temsi, which were based on Imperial measurements, Merkur used metric. It was begun in 1920 and r...
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http://en.wikipedia.org/wiki/Merkur_(toy)
[train] The Merkur was an international express train linking Copenhagen, the Danish capital, with Germany. The train was named after the Roman God Mercury, the God of traders and travellers. == F-Zug == In 1953 the Merkur was introduced by Deutsche Bundesbahn as part of their long distance network (Fern Zug). The Merkur (F 3/4) linked Hamb...
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http://en.wikipedia.org/wiki/Merkur_(train)
(1935) Merkur (1935) is a cultivated variety of potato.
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http://www.probertencyclopaedia.com/browse/QM.HTM
(CZEHBROD) Merkur (CZEHBROD) is a cultivated variety of potato.
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http://www.probertencyclopaedia.com/browse/QM.HTM

Merkur is a cultivated variety of potato.
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http://www.probertencyclopaedia.com/browse/QM.HTM

Mercury - Operational code name for the German air attacks on Crete - April 1941
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https://www.encyclo.co.uk/local/20490
No exact match found.