IV7 just means vi.

https://www.wikiart.org/en/henri-de-toulouse-lautrec/red-haired-woman-seen-from-behind-1891

A Positive Light on a Negative Space by Tang Yau Hoong

https://www.wikiart.org/en/alfred-sisley/molesey-weir-at-hampton-court-morning-1874

https://www.wikiart.org/en/konstantin-korovin/in-the-south-of-france-1908

https://www.wikiart.org/en/henri-edmond-cross/a-venetian-canal-1905

Dmitri Cavander, Ferry, August 2017, Oil on canvas

https://www.wikiart.org/en/henri-de-toulouse-lautrec/c-leyran-view-of-the-vignards-1880

Cat takes selfie everyday for 9 days

https://www.wikiart.org/en/john-singer-sargent/venetian-canal-palazzo-corner

https://www.wikiart.org/en/childe-hassam/the-south-gorge-appledore-isles-of-shoals

Pan Shots - Nausicaä of the Valley of the Wind - Dir. Hayao Miyazaki (1984)

https://www.wikiart.org/en/remedios-varo/plant-insumsia

https://www.wikiart.org/en/paul-gauguin/rouen-suburb-1884

https://www.guggenheim.org/artwork/2500

https://www.wikiart.org/en/paul-signac/concarneau-opus-221-adagio-1891