Heavily Patinated Antique Coin with Monarch Profile

The item appears to be an antique or vintage copper or bronze coin, possibly a British penny or halfpenny, based on the visible profile of what seems to be a monarch. The coin is circular and has a significant amount of dark green and reddish-brown patina covering its surfaces, indicating considerable age and exposure to the elements, or prolonged storage in certain conditions. The green hue suggests copper oxidation (verdigris). Despite the heavy patination, a profile bust facing left is discernible in the center, with what looks like a crown or regal headwear. Around the rim, there are faint impressed letters, though too obscured by wear and patina to be fully read. The overall condition is poor, with significant surface corrosion and loss of fine detail. The edges appear worn and possibly irregular. No specific maker's marks or dates are legible from the image, but the style of the portrait suggests a 19th or early 20th-century European, most likely British, origin. The craftsmanship, though difficult to assess due to condition, would have been consistent with mass-produced coinage of its era. This piece is primarily notable for its historical age and heavily patinated aesthetic, which might appeal to collectors interested in 'dug' or naturally aged artifacts.