Brand founded in 1932 in Cologne, Germany, by Willy Heineberg. Denicotea is actually the name of a silica gel filter, cigarette holders and care products for pipes and cigarette holders.
A fantasy series of pipes produced by Luigi Crugnola for the German market.
Stefan Petzuch points out this brand appears to have similarities to the Mauro Cateni pipe brand, in particular they are both fictional Italian brands by German companies, and both have the "HAND CUT" imprint on the stem as seen bellow. This may connect the Aldo Morelli brand to Gebr. Heinemann KG in Hamburg, who had registered the Mauro Cateni brand. Or perhaps there is a connection between Denicotea and Gegr. Heinemann KG, or perhaps these pipe brands simply used "Hand Cut" stems from the same source.