1 Kilo Aztec Calendar Silver Round

The 1 Kilo Aztec Calendar Silver Round

The 1 Kilo Aztec Calendar silver round from Golden State Mint contains 32.15 troy ounces (1,000 grams) of .999 fine silver, struck with the same Sun Stone obverse and Cuauhtemoc reverse that appear across the full Aztec Calendar product range. At kilo weight, the round delivers the lowest per-ounce premium available in the series, making it the most cost-efficient way to acquire silver in this particular design.

Golden State Mint has produced the Aztec Calendar design continuously since the series began, with no year dates, mintage limits, or annual variations. This means the kilo version is always available to order rather than being subject to the limited-edition dynamics that drive premiums on sovereign kilo coins like the Perth Mint Lunar series. The round trades purely on metal content plus a modest manufacturing markup.

The design reproduces the Aztec Sun Stone (Piedra del Sol), a 25-ton basalt disk created in the late 15th century and now displayed at the National Museum of Anthropology in Mexico City. The central figure of Tonatiuh, the solar deity, is surrounded by the 20 day-signs of the Aztec calendar cycle. The reverse features Cuauhtemoc, the last Aztec emperor who led resistance against the Spanish conquest. At kilo diameter (approximately 80-100mm), the intricate detail of the calendar design is more fully visible than on the smaller 1/4 oz and 1 oz versions.

1 Kilo Aztec Calendar Technical Details

The kilo round shares the same .999 purity and design elements as the smaller denominations in the Aztec Calendar range, which spans from 1/10 oz through 10 oz in both round and bar formats. Golden State Mint also produces the design in copper at various sizes. No gold version of the Aztec Calendar has been documented in current production.

No assay card, serial number, or certificate of authenticity accompanies the standard bullion version. Authentication relies on weight verification (1,000.00 grams), silver testing (XRF, specific gravity, or sigma metalytics), and visual inspection of the strike quality and design detail. The complexity of the Sun Stone design provides organic counterfeit resistance, as the fine relief features and intricate day-sign symbols are difficult to replicate precisely in lower-quality production processes. The reeded edge matches the treatment on all round-format pieces in the series.

Tax Treatment of the Aztec Calendar Kilo Round

As a privately minted silver round with no legal tender status, the 1 Kilo Aztec Calendar receives no special tax treatment in any jurisdiction. It is taxed identically to all other .999 fine silver bullion products of equivalent weight.

• United States: The .999 silver purity satisfies the IRS Section 408(m) requirement for precious metals IRAs (silver must be 99.9%+ pure). Golden State Mint markets the product as "IRA Approved," though individual custodian acceptance varies. Sales tax is state-dependent; approximately 35 states exempt investment silver from sales tax. Capital gains are taxed at the collectibles rate of up to 28% for long-term holdings.
• United Kingdom: Subject to 20% VAT on purchase. No CGT exemption (not legal tender). The VAT burden is significant on a kilo piece; at $1,000 base price, a UK buyer pays approximately $200 in irrecoverable VAT. VAT-free storage in offshore vaults is one workaround.
• Canada: GST/HST exempt at .999 purity under the Excise Tax Act investment precious metals provisions. Capital gains taxed at the 50% inclusion rate.
• Australia: GST-free as investment-grade silver (.999 purity from a recognized manufacturer). Capital gains subject to standard CGT rules with a 50% discount for holdings exceeding 12 months.
• Singapore: GST-exempt under the Investment Precious Metals (IPM) scheme at .999 purity. No capital gains tax applies.

Aztec Calendar Kilo vs Alternative Kilo Silver Rounds

At the 1 kilo weight, the Aztec Calendar competes directly with other private mint kilo rounds and with LBMA-accredited kilo bars from major refiners. The choice depends on whether the buyer prioritises lowest premium (bars win), design appeal (rounds win), or maximum resale liquidity (LBMA bars win).

The 1 Kilo Germania round from Germania Mint offers .9999 purity (four nines versus GSM's three nines) and a distinctive Germanic allegorical design. Germania rounds carry slightly higher premiums reflecting the purer silver content and European mint positioning. The Aztec Calendar counters with lower premiums and longer market presence, having been continuously produced for decades versus Germania's 2019 launch.

The 1 Kilo Scottsdale Stacker takes a fundamentally different approach, using precision-engineered interlocking edges for stable vault storage. The Stacker sacrifices ornamental design for practical functionality, while the Aztec Calendar prioritises visual impact. Both are .999 fine from established US private mints.

Against LBMA-accredited kilo bars (PAMP Suisse, Valcambi, Heraeus, Asahi), the Aztec Calendar typically trades at a similar or slightly higher premium but offers a more distinctive product that some buyers prefer for its design character. LBMA bars provide marginally better international resale liquidity due to global brand recognition among institutional dealers. For domestic US resale to bullion dealers, the difference is minimal.