Zi:Sin Silver

KOMSCO Zi:Sin: South Korea's Twelve Guardians in Silver

The Zi:Sin series is a 12-medal programme from KOMSCO (Korea Minting, Security Printing and ID Card Operating Corporation), the sovereign mint of South Korea. Each annual release features one of the Sipijishin (Twelve Guardians), divine commanders from Korean mythology who protect against evil from twelve directional points, aligned with the Korean lunar calendar's 12-year animal cycle.

Launched in 2017 with Gallus (the Rooster), the series runs through 2028 with Pithecus (the Monkey). Ten of the twelve guardians have been released as of 2025. Each standard silver medal contains one troy ounce of .999 fine silver and is denominated in "Clay," a non-circulating monetary unit created by KOMSCO specifically for its bullion programme.

The Clay denomination is significant for classification. These are technically medals, not coins. South Korea's circulating currency is the Won. The Clay has no exchange rate and no purchasing power outside the bullion context. This distinction affects tax treatment and retirement account eligibility in several countries, as jurisdictions that grant favourable treatment to legal tender coins may not extend the same to medals.

KOMSCO also produces the Chiwoo Cheonwang series, which shares the same Dokkaebi shield obverse design. The two series form a visual family within KOMSCO's bullion programme, with Chiwoo featuring the Korean God of War and Zi:Sin rotating through the Twelve Guardians.

Zi:Sin Silver Medal Specifications

Release Schedule and Mintages

Mintages dropped significantly from 40,000 (2018-2019) to 22,000 (2020) and 20,000 (2021), then stabilised at 30,000 from 2022 onward. The early low-mintage years command notable secondary market premiums. Gold versions are produced at approximately 1,200 pieces per year, and limited-edition variants (Eclipse, Hybrid, Rhodium-plated) have been produced for some years with mintages as low as 333 pieces. A 10 oz investor range was also produced from 2019 to 2022 with mintages from 75 to 300 pieces.

Security features include a latent security element on the obverse that displays "999" and KOMSCO branding when tilted at certain angles. Standard packaging is individual plastic flips, with mint tubes of 25 and sealed mint boxes of 250 available for bulk orders.

Zi:Sin Tax Treatment by Country

The medal classification of the Zi:Sin series creates a less favourable tax position than government legal tender coins in most jurisdictions. The "Clay" denomination is a KOMSCO-created unit for bullion products, not a recognised circulating currency.

• United States: No federal sales tax. State exemptions vary; most states that exempt bullion do so based on metal content rather than legal tender status, so Zi:Sin medals likely qualify in those states. Not IRA-eligible in most cases. Most IRA custodians require sovereign legal tender coins or bars from COMEX/NYMEX-approved refiners, and the Clay denomination may not satisfy the sovereign legal tender requirement. Capital gains are taxed at the 28% collectibles rate.
• United Kingdom: Silver bullion carries 20% VAT. The medal classification means no CGT exemption applies (not that foreign silver coins would qualify anyway, since only UK legal tender coins are CGT-exempt). Some UK dealers classify these as "rounds" rather than coins.
• Canada: GST/HST treatment may depend on whether the Clay denomination is recognised as meeting the definition of a coin versus a medal. The .999 purity meets the 99.9% threshold for the federal precious metals exemption.
• Australia: GST treatment depends on whether the product meets the definition of investment-grade precious metals. The .999 purity qualifies at the 99.9% threshold.
• Singapore: The .999 purity meets the IPM threshold (99.9% for silver). Qualifying coins on the MAS-approved list are GST-exempt; medals may require separate evaluation.
• Hong Kong: No sales tax, no import duty, no capital gains tax. The medal/coin distinction is irrelevant here.
• South Korea: Available domestically through KOMSCO and Korean dealers. Local tax treatment applies.

The Twelve Guardians: From 8th-Century Stone Carvings to Modern Silver

The Twelve Guardians (Sipijishin) hold deep significance in Korean culture. They are carved into stone at the UNESCO World Heritage site of Seokguram Grotto near Gyeongju, dating to the 8th century. These stone reliefs depict armoured warriors, each associated with one of twelve directional points and one of twelve animals from the Korean lunar calendar. The Zi:Sin series draws directly from this centuries-old artistic tradition.

KOMSCO launched the series in 2017, one year after the debut of its Chiwoo Cheonwang series. The two programmes share the same obverse design: the Dokkaebi shield, depicting a mythical Korean guardian spirit that wards off evil, similar in concept to a gargoyle in Western architecture. The shared obverse creates a visual family, with Chiwoo featuring the Korean God of War on its reverse and Zi:Sin rotating through the Twelve Guardians.

Each guardian is depicted in elaborate armour wielding their signature weapon, rendered in a detailed Korean artistic style with flowing lines and dynamic poses. The Gallus (Rooster, 2017) guardian carries an elongated battle spear and is described as a "messenger of light" who can summon solar-bright illumination and foresee future events. The Taurus (Ox, 2021) is shown forging a powerful sword, described as both "protector and God of War."

The series will complete in 2028 with Pithecus (Monkey), making it one of the few bullion programmes with a defined endpoint. Twelve designs over twelve years, mirroring the twelve-year cycle of the Korean lunar calendar. For collectors, this fixed scope means the complete set is achievable, unlike open-ended series that continue indefinitely.

KOMSCO itself has a long institutional history. Established on 1 October 1951 and headquartered in Daejeon, it is the sovereign mint of South Korea, responsible for producing the nation's currency, security documents, and bullion products. The Zi:Sin and Chiwoo Cheonwang programmes represent its entry into the international bullion collector market.

Zi:Sin vs Other Asian and Mythological Silver Series

The closest comparison within KOMSCO's own catalogue is the Chiwoo Cheonwang series. Both use .999 silver, the same 40 mm diameter, the same Dokkaebi obverse, and the same Clay denomination. Chiwoo launched a year earlier (2016) and features a single character (the Korean God of War) with annual design variations, giving it stronger name recognition among collectors. The Zi:Sin's advantage is its structured 12-guardian rotation, which appeals to set collectors who want a defined, completable programme.

Against the Perth Mint Lunar series, the Zi:Sin covers similar thematic territory (12 animals on a calendar cycle) but from a Korean rather than Chinese tradition. The Lunar series uses .9999 purity, has uncapped mintages, and is produced in multiple weights from 1/2 oz to 10 oz. It also benefits from Australian legal tender status and decades of collector following. The Zi:Sin offers lower mintages (20,000-40,000 vs hundreds of thousands) and a mythology-driven design approach that goes beyond simple animal depiction.

Compared to Chinese Panda coins, which are the dominant Asian bullion product globally, the Zi:Sin is a niche series. Pandas are produced in the millions with broad dealer acceptance and deep secondary markets. The Zi:Sin's appeal is precisely its scarcity and its connection to a less commercially exploited cultural tradition. Buyers looking for efficient silver accumulation will choose Pandas or Maple Leafs. Buyers drawn to Korean mythology and willing to accept lower liquidity for lower mintage will find the Zi:Sin distinctive.

The medal classification is the main practical disadvantage. Legal tender coins from the Royal Mint, Perth Mint, or Royal Canadian Mint carry clearer tax treatment and broader retirement account eligibility. The Zi:Sin compensates with its cultural depth, low mintage, and the KOMSCO sovereign mint backing that private mint rounds lack.