Oil painting signed 'O. Borg'

This is an oil painting on canvas depicting a seascape with a sailboat and rocky shoreline under a moody, overcast sky. The physical composition features textured brushwork, particularly in the rendering of the churning white-capped blue waves and the dark, brownish-grey rocks in the foreground. A small sailboat is visible in the upper right portion of the mid-ground. The painting is presented in a simple, light-colored wooden frame with multi-toned borders. Regarding notable markings, a signature is legible at the lower right corner, reading 'O. Borg'. The owner provides unverified contextual notes identifying the work as 'Sea and Sailboat', dated 1979, and attributing it to the artist Onerva Borg, with dimensions stated as 50x35x3 cm; however, these user-supplied claims remain entirely unverified by physical inspection or independent authentication. The item displays visual characteristics consistent with mid-to-late 20th-century amateur or regional academic landscape painting, showing mild surface wear appropriate for a framed canvas of that general era. The attribution in the item name rests strictly on the observed signature at the lower right.

Based on what I can see in the provided image, this is an oil painting on canvas depicting a seascape with a sailboat and rocky shoreline, bearing a signature at the lower right corner reading 'O. Borg'. Per user submission: the owner identifies this as 'Sea and Sailboat', dated 1979, and attributes it to the artist Onerva Borg, with dimensions of 50x35x3 cm. I cannot verify from a photo whether these contextual notes are accurate, as visible markings can be misleading and I would need physical inspection to confirm material details. This appraisal estimate assumes the owner's working assumption is correct. Assuming the attribution to Onerva Borg holds true, landscape and regional academic paintings of this scale and mid-to-late 20th-century period typically trade within the $250 to $450 range in the secondary art market, depending on framing, overall condition, and buyer interest. Demand for regional or lesser-known mid-century European oil paintings tends to be modest and localized. What would be needed to confirm authenticity and authorship includes in-person examination by a qualified fine art expert, thorough provenance documentation, and analysis of the canvas, pigments, and signature under magnification. If this item turns out to be a reproduction, a copy, or executed 'in the style of' rather than an autograph work by the named artist, the value would decrease significantly, likely falling into a decorative tier of $50 to $100.