Oil painting of a birch tree

This is an oil painting on canvas depicting a stylized birch tree with a fragmented, mosaic-like application of paint. The composition features a prominent diagonal birch trunk traversing the frame from the upper left, rendered in characteristic white, grey, and dark dashes, surrounded by dense foliage and a background made up of small, blocky touches of green, blue, yellow, and pink hues. The brushwork is expressive and heavily textured, creating a patterned, tessellated surface across the entire canvas. There is no visible signature or maker's mark directly on the front of the work. The visible condition appears stable with standard surface texture consistent with oil on canvas. Stylistically, the piece suggests a modern or late 20th-century approach to landscape painting, though no specific period can be strictly asserted from the visual evidence alone. Regarding provenance, the owner supplies additional context that the work is titled "Mosaic-like Birch Tree", dated around 1981, and unverifiedly attributed to artist Onerva Borg with no signature ("Ei signeerausta"), measuring 60x70x2.5 cm. This user-supplied attribution is entirely unverified by visual signatures and should be treated as unconfirmed context.

Based on what I can see in the provided image, this is an oil painting on canvas measuring 60x70x2.5 cm, featuring a stylized birch tree with a heavily textured, mosaic-like application of paint and expressive brushwork. Per user submission: the work is titled 'Mosaic-like Birch Tree', dated around 1981, and attributed to artist Onerva Borg with no visible signature on the front. I cannot verify from a photo alone whether the unverified attribution is correct, nor can I definitively assess the canvas, medium depth, or exact age without a physical inspection. My value estimate of $800-1,500 assumes that the attribution to Onerva Borg is correct and that the piece dates to the early 1980s. The market for mid-to-late 20th-century Nordic landscape and abstract-leaning works of this type generally sees moderate regional demand, though values fluctuate significantly based on confirmed documentation. If the attribution proves incorrect and the work is merely in the style of the artist, an unauthenticated copy, or an anonymous period piece, the value would likely decrease to the $200-500 range, reflecting standard decorative art market values. To confirm authorship and value, one would need in-person physical examination by a qualified art conservator, expert appraisal, and provenance documentation linking the piece to the artist's studio or exhibition history.