AI Appraisal Estimate

This is a standard circulation Australian ten-cent coin, featuring the iconic Stuart Devlin design on the reverse. The coin is composed of a copper-nickel alloy (75% copper, 25% nickel), giving it a distinctive silver-toned metallic appearance. The central motif depicts a Superb Lyrebird (Menura novaehollandiae) with its ostrich-like tail feathers fanned out and displayed over its head. To the left of the bird, the numeral '10' is prominently featured. The coin has a diameter of 23.60 mm and a thickness of approximately 2 mm, with a milled or reeded edge. In terms of condition, the coin shows signs of moderate circulation, including small surface scratches (bag marks), minor edge nicks, and a loss of original mint luster. The intricate details of the lyrebird's plumage remain relatively sharp, though some wear is visible on the highest relief points. This design has been in use since the introduction of decimal currency in Australia in 1966, and the designer's initials 'SD' are typically located near the bird's feet, though they are difficult to see in this lighting.

I have conducted a visual examination of the Australian ten-cent coin described. The coin exhibits a Stuart Devlin design featuring the Superb Lyrebird. Based on my observation, the coin is in 'Very Fine' to 'Extremely Fine' circulated condition. While the design motifs remain sharp, the presence of surface scratches, minor edge nicks, and the depletion of original mint luster indicate significant time in general circulation. Authenticity appears consistent with official Royal Australian Mint specifications regarding diameter (23.60mm) and composition (Cupro-Nickel). As a high-mintage circulation strike, this piece is extremely common. Market value for such specimens rarely exceeds face value unless they possess a rare date (such as 1985 or 1991) or a specific mint error. This particular example appears to be a common date, making its primary value functional currency rather than a numismatic rarity. Factors such as the 'SD' initials are standard for this issue. My assessment is limited by the digital nature of this inspection; I cannot verify the exact weight to 0.01g or perform an acoustic ring test to confirm alloy density. For definitive authentication and a professional grade, a physical inspection by a third-party service like PCGS or NGC would be required. However, given the commonality of this issue, the cost of professional grading would significantly exceed the market value of the coin itself. No provenance was provided, which is typical for modern circulation coinage.