Modernist-style abstract pastel or charcoal drawing of trees

This artwork is a modernist-style drawing depicting a dense, abstracted thicket of tree trunks. The piece appears to be executed in a dry medium such as pastel, charcoal, or crayon on paper. The composition is characterized by thick, arcing vertical lines in shades of white and pale grey, which overlap to represent the foreground trees. The background features energetic, vertical gestural marks in rust-red, earthy brown, and hints of green. The overall aesthetic is consistent with mid-to-late 20th-century expressionist or abstract landscape works. The piece is presented behind a white mat and encased in a simple dark frame. There are no signatures or dates visible in the provided image; the identification is based entirely on the visual stylistic presentation. The owner has supplied an unverified note mentioning a mark reading '1.20' in the lower left at a ninety-degree angle that is not visible here. Without physical inspection, the exact medium and age cannot be established beyond a stylistic attribution. The work shows no obvious signs of significant damage, though some slight surface variations are visible reflecting the texture of the dry medium.

I have examined the image provided of this modernist-style landscape drawing. Based on what I can see, the work is a gestural, mid-to-late 20th-century composition executed in a dry medium like pastel or charcoal. The energetic use of color and abstracting of the forest motif suggests an artist influenced by expressionist movements. I cannot verify the exact medium, age, or presence of marking without a physical inspection, as the '1.20' mark mentioned by the owner is not visible in the photographs. I must treat the attribution as a working hypothesis rather than a confirmed identification. This estimated value of $400 - $800 assumes the work is by a listed or recognizable regional modernist artist of that era. Works of this nature attract interest due to their decorative appeal and historical connection to abstract landscape trends. However, the value is highly dependent on authentication; an unauthenticated piece of this type by an unknown hand would typically sell in the $100 - $250 range as a decorative object. If this were to be identified as the work of a highly collected mid-century master, the value could increase significantly. To confirm the identity and value, an in-person examination by a specialist is required to inspect the paper stock, verify the reported mark, and research potential provenance. Market demand for 20th-century works on paper remains stable, but without a confirmed signature or documentation, the item's value remains speculative based on its stylistic presentation and visual quality alone. I am unable to determine if this is an original unique work or a highly skilled period copy from the provided images at this time.