The .zip naming convention "2019-10" is standard for creators who distribute their monthly output as a single package to their subscribers (often called "rewards"). A typical archive for this artist from that period would include:
: Stylized, high-fidelity 3D modeling that focuses on "looping" animations and 4K quality renders. Content of the October 2019 Archive Grand_Cupido_2019-10.zip
The file refers to a monthly digital archive of 3D adult artwork created by the digital artist Grand Cupido (also known as GrandCupido) in October 2019. Artist Profile Artist Profile : Sketches or early modeling phases
: Sketches or early modeling phases shared with fans. : Short, high-quality video files (MP4 or GIF)
: Varied lighting, outfits, or poses for specific scenes. Community Presence
: Final images in 4K or 8K resolution.
: Short, high-quality video files (MP4 or GIF) featuring character animations.