Spanish Marine Province of Cumana: presumably used between 1815 and 1819, is refers by Mr. Jaume Olle in his "Electronical Bulletin of Vexillology from Catalonia", Part: Historical flags / Venezuela - Reus, Spain-Catalonia 1999. Mr. Peter Hans van den Muijzenberg, refers it to J.W Norie - J.S. Hobbs: Flaggen to aller seefahrenden Nationen, 1971 (first printing 1848) 279 Cumana. Note that safe by the width of its strips, is similar to the Tragic Flag of Miranda. Until now, in Venezuela and Spain does not seem exist any specialized registry that guarantees its existence.
Own work based on: 

https://www.fotw.info/flags/ve-hist2.html
Salvadoroff