Abstract architectural oil painting, manner of Onerva Borg (unverified)

This is an abstract oil painting on canvas featuring a geometric, architectural composition with interlocking shapes, arches, curved staircase-like motifs, and textured planes. The physical dimensions provided in the owner notes are approximately 65x50x2.5 cm. The palette consists of muted earth tones including beige, brown, slate blue, gold, and white, creating a modernist urban landscape effect. The painting appears to be unsigned on the front, showing no visible artist signature or maker's marks. There is a light, consistent craquelure and surface dust indicative of age, but the overall condition appears stable with no major tears or visible repairs noted from the photograph. The work reflects a mid-20th-century modernist or constructivist style. Because the painting is unsigned and lacks visible maker's marks, our stylistic identification is purely visual and unverified. Furthermore, the additional context provided by the owner attributes the work to artist Onerva Borg and dates it to 1983 (noted as 'Ei signeerausta', meaning unsigned), but this user-supplied attribution is entirely unverified and treated here as unconfirmed context. The attribution in the item name rests solely on the owner-supplied notes combined with stylistic similarities, and the item remains unauthenticated.

Per user submission, this abstract oil painting on canvas is attributed to Onerva Borg, dated to 1983, and noted as unsigned. Based on what I can see in the photograph, the work features a mid-20th-century modernist or constructivist style with geometric, architectural compositions, interlocking shapes, arches, and a muted earth-tone palette. I cannot verify the medium's exact age, canvas preparation, or lack of signature from a digital image alone; these details would need physical inspection to confirm. My appraisal estimate assumes the owner's unverified attribution is correct for the sake of market context. In general, works of this type and period associated with Finnish modernist sensibilities attract niche collector interest within regional Scandinavian art markets. If the attribution is correct, a value range of $800 to $1,500 is reasonable given the moderate scale (65x50x2.5 cm) and stable condition suggested by the light craquelure and surface dust. However, because this piece remains unauthenticated and relies entirely on user-supplied context, the valuation is entirely conditional. Should the item turn out to be a later copy, a reproduction, or simply an unattributed work executed 'in the style of' rather than an autograph piece, the market value would drop significantly, likely falling into the $150-$300 decorative art range. To move beyond a working assumption, this piece would require an in-person physical examination by a qualified art conservator, detailed provenance documentation, and consultation with specialized Finnish modernist art experts to explore potential authorship.