Color lithograph bearing a signature reading 'David Hockney' (not authenticated)

This framed color lithograph features an interior domestic scene rendered in a vibrant, pop-art and modernist aesthetic, showing stylized furniture including a red chaise longue, a blue armchair, a piano, and striped flooring in bold primary colors. The owner-supplied context identifies this as a David Hockney work, noting an edition number of 111/180 and a stamp reading 'ATLANTIS KUNST VERLAG', though these claims remain completely unauthenticated. The lower left margin contains a visible stamp reading 'ATLANTIS KUNST VERLAG' alongside the edition numbering in pencil '111/180'. The lower right margin bears a handwritten signature resembling the artist's name. The print is presented on a textured paper stock, housed within a white mat board, a deep blue secondary mat, and a bright orange custom wood frame. Based on visual style alone, the piece presents characteristics consistent with mid-to-late 20th-century print reproductions or lithographic editions, but given the high prevalence of blue-chip forgeries and reproductions in the secondary market, this item requires professional physical inspection to determine its actual status and age. The physical condition appears generally clean with no obvious tears or surface smudges visible through the image.

Based on the provided image and description, I am evaluating this framed color lithograph under the assumption that the owner's claims are correct. The owner identifies this as a David Hockney work, noting an edition number of 111/180 alongside a stamp reading 'ATLANTIS KUNST VERLAG' and a visible signature. Based on what I can see in the photo, the piece displays a vibrant interior domestic scene rendered in a pop-art and modernist aesthetic with bold primary colors and stylized furniture. I can't verify from a photo whether the signature is autograph, whether the numbering and publisher stamp are valid for a legitimate limited edition, or if the paper stock and printing technique align with known editions by the artist. A physical inspection by a qualified fine art expert is necessary to evaluate the medium, paper characteristics, and ink application. If the attribution to David Hockney is correct, comparable limited-edition lithographs by the artist of this scale typically trade in the $5,000 to $8,000 range in the secondary market, depending on condition and market demand. However, the market for blue-chip prints carries a high risk of reproductions and unauthorized copies. If physical examination reveals this piece to be a modern reproduction, a decorative poster, or a copy 'in the style of' rather than an authorized lithographic edition, the value would drop significantly to a purely decorative range of $100 to $300. To confirm status and establish a reliable valuation, this item would require in-person professional authentication, detailed provenance research, and consultation with a Hockney catalog raisonné expert.