Costa Rican coin, as marked 1958

This specimen appears to be a silver-colored metallic coin, consistent in design with the mid-20th-century currency of Costa Rica. The obverse side shown features the national coat of arms in the center, which includes depicted mountains (volcanoes) and merchant ships, surrounded by a scroll-like border. The text inscribed along the upper perimeter reads 'REPUBLICA DE COSTA RICA' and the date '1958' is clearly visible at the bottom. The edge of the face is finished with a beaded or denticulated border. Physically, the item exhibits a circular form with a grey, metallic luster suggesting a composition likely consistent with a base metal alloy such as cupro-nickel or stainless steel, typical for circulation coinage of that era. The surface shows signs of moderate wear, with some softening of the higher points of the central crest and light scratching throughout the fields. There is also evidence of slight oxidation or surface debris particularly near the right edge and within the crevices of the lettering. While the markings are legible, the item's provenance and metallic purity remain unverified without physical testing or professional numismatic certification. The overall craftsmanship and relief are consistent with mass-produced government minting from the late 1950s.

Based on the provided imagery, I have examined this specimen which bears markings consistent with a 1958 Costa Rican circulating coin. The design featuring the national coat of arms and the circular beaded border aligns with the cupro-nickel coinage mass-produced during that era. From what I can see, the coin exhibits moderate circulation wear, including softening of the relief on the volcanoes and merchant ships, which suggests a grade in the 'Fine' to 'Very Fine' range if viewed under standard numismatic criteria. I cannot verify the exact metallic composition or weight from a photo alone; physical inspection would be required to rule out contemporary counterfeits or later reproductions. The basis for this estimate is the commonality of base-metal circulation issues from the mid-20th century. While these items are of historical interest, they were typically minted in high volumes, which limits the premium for specimens in circulated condition. Market demand for this type of numismatic material is generally low among collectors unless the coin is in an exceptional state of preservation or possesses a rare mint error. To provide a more robust valuation, an in-person examination by a numismatist would be necessary to verify the strike and surface integrity. If this item were found to be a modern replica or a non-metallic copy, it would possess negligible numismatic value beyond its role as a novelty. The current estimate assumes the item is a standard government-issued circulation strike as indicated by the 1958 date.