Maritime harbor oil painting bearing a signature reminiscent of German Impressionism

This appears to be a small-scale oil painting, likely on panel or board, depicting a harbor scene with several masted sailing vessels moored near a stone quay. The work features a townscape in the background with a prominent church spire and buildings in warm terracotta tones. Stylistically, the painting is consistent with late 19th or early 20th-century European Impressionism, utilizing a muted palette of ochre, sage green, and earthy browns with visible impasto in the sky and water. In the lower-left corner, the work bears a handwritten signature that appears to read 'G. Grobe' (consistent with the name German artist German Grobe, 1857-1938); however, this signature is unverified and requires physical inspection to determine if it is contemporary with the paint layer. The user-supplied attribution to 'Scobe' is noted but remains unverified as it does not align with the visible inscription. The painting is housed in a wide, black-finished wooden frame with a gilded inner fillet. The frame shows visible signs of wear, including numerous small nicks, scratches, and finish loss along the edges and surface. The painting surface appears somewhat yellowed, possibly due to aged varnish, and shows some surface grime consistent with age.

Based on my examination of the provided images, this small-scale oil painting depicts a maritime harbor scene consistent with European Impressionist styles of the late 19th or early 20th century. While the user-supplied attribution suggests an artist named 'Scobe,' the lower-left corner bears a signature that I can see appears to read 'G. Grobe,' potentially corresponding to German artist German Grobe (1857-1938). I must treat this attribution as a hypothesis; I cannot verify from a photo if the signature is contemporary with the paint layer or a later addition. The value range of $2,500 - $4,500 assumes the work is an authentic example by Grobe. This estimate reflects the muted palette and impasto techniques typical of his coastal subjects, which generally find favor in the European art market. However, the frame shows visible nicks and finish loss, and the paint surface exhibits yellowing and grime, which may necessitate professional cleaning. I cannot determine the substrate or the health of the paint bond from a photograph. To confirm the identity of the artist, a physical inspection by a specialist in German Impressionism and possibly provenance documentation would be required. Factors such as scientific testing of pigment age or microscopic analysis of the signature would be needed to move beyond a working assumption. If this work is later found to be 'in the style of' the artist or a period copy rather than an autograph work, the market value would likely decrease significantly, potentially to the $300 - $600 range as a decorative period piece.