How to Identify the 5 Yang

Begin by confirming the coin is a struck reform-era piece, not old cast cash. Korea's traditional coins are round with a central square hole; the 5 Yang instead is a solid struck coin with a chrysanthemum-and-floral design on one face and a coiled dragon amid ornamental characters on the other. The absence of the square hole plus the dragon marks it as late-nineteenth-century reform coinage.

Read the value in Chinese characters. Look for 五兩 (five yang) among the reverse legends; the value is spelled out rather than shown as a Western numeral. Because several denominations in this series share the same dragon-and-floral look, the character value and the coin's diameter are what separate the 5 Yang from the smaller pieces, so verify both.

Date the coin from the Gaeguk (開國) era. Find the era characters and the year numerals, remembering the count starts from 1392; adding the era-year to roughly 1391 gives an approximate Western year. Confirm the country name and look for the taegeuk emblem, which together with the dragon distinguishes a Korean issue from visually similar Chinese or Japanese dragon coins of the period.

Check metal and size as a set. This example is bronze, so expect the color, weight, and wear of a base-metal coin rather than silver; a piece that is unexpectedly heavy, bright, or a different diameter than reference figures deserves scrutiny. Note that Korea's reform denominations were struck in more than one metal, so metal alone does not identify the value.

Apply firm authentication caution. Late-Joseon and Korean Empire coins are heavily reproduced, including modern replicas and altered pieces, and the dragon types are among the most copied. Compare the dragon detail, character forms, and era-year against trusted reference images, weigh and measure the coin, and for any example carrying real value seek certification by a major grading service before trusting the attribution or price.