100g Scottsdale Stacker Silver Round

A Metric-Weight Round Built to Interlock

The 100g Scottsdale Stacker silver round is an unusual product in the bullion market: a metric-weight round (3.215 troy ounces) from a US private mint, engineered with interlocking surfaces for stable stacking. Scottsdale Mint's Stacker product line is built around a single functional concept. The rounds use concave and convex surfaces on their top and bottom faces that nest together when stacked, preventing the lateral sliding that occurs with conventional flat-field rounds and coins. The 100g round shares a 38.8 mm diameter with the 1 oz, 2 oz, and 5 oz Lion Stacker rounds, meaning all four denominations interlock within a single mixed-weight stack.

The 100g format is significant because it bridges the troy ounce and metric gram systems. At 3.215 troy ounces, the 100g round provides more silver content than a standard pair of 1 oz rounds, at a weight that aligns with the metric system used across most international markets. For European and Asian buyers accustomed to gram-denominated products, the 100g Scottsdale Stacker offers a familiar weight in an engineered format that most metric-weight silver products lack.

Scottsdale Mint was founded in 2008 in Scottsdale, Arizona, by Josh Phair, whose background in mining industry risk management at Willis Towers Watson is reflected in the engineering-first approach to product design. The mint holds ISO 9001:2015 certification and manufactures all products on-site using CNC minting equipment. The crowned Scottsdale Lion, rendered in high relief on the obverse, serves as the brand's primary hallmark across the Stacker round range. The reverse carries weight, purity, and mint identification markings.

The round is struck in .999 fine silver with no mintage caps and no year dates. It is an open-issue bullion product, continuously available and priced on a premium-over-spot basis. Standard packaging is tubes of 7 (reflecting the round's metric weight: 7 rounds per tube rather than the standard 20 or 25 used for troy-ounce products).

100g Scottsdale Stacker Silver Round Specifications

Cross-Denomination Stacking Compatibility

All Lion Stacker rounds share the same 38.8 mm diameter. Only thickness varies with weight. A buyer can stack 1 oz, 2 oz, 5 oz, and 100g rounds together in any combination, with every piece interlocking into the next.

Scottsdale Mint also produces rectangular Stacker bars (10 oz, kilo, 100 oz) with bevelled interlocking edges, a different mechanism from the round's concave/convex system. Bars and rounds do not interlock with each other. The bars include unique serial numbers and a CNC-machined anti-forgery swirl pattern on the reverse. Some bar products ship with Certi-Lock tamper-evident assay cards featuring mobile verification.

Security Features

The Lion Stacker rounds carry precision weight and purity stamping but do not include serial numbers. There is no MintMark SI or equivalent optical/electronic verification system. The quality of the interlocking mechanism and the high-relief lion design serve as informal authentication markers; counterfeits typically fail to reproduce the precision machining required for the interlocking surfaces to function correctly.

Tax Treatment for the 100g Scottsdale Stacker Silver Round

This product is a private-mint silver round with no legal tender status and no face value. Tax treatment follows the standard rules for silver bullion in each jurisdiction.

United States

Approximately 35 states exempt investment bullion from sales tax. Scottsdale Mint states that their silver products are IRA-eligible, with the .999 purity meeting IRS fineness requirements. At the 100g weight (approximately $100+ of metal content at current silver prices), single-purchase threshold exemptions in states like California ($2,000) and Florida ($500) may or may not apply depending on quantity. Capital gains are taxed at the collectibles rate of up to 28%.

United Kingdom

Silver bullion is subject to 20% VAT on purchase in the UK, regardless of form. No CGT exemption applies to private-mint rounds. The 100g weight is more commonly associated with European and Asian markets than the UK bullion market, which predominantly trades in troy-ounce denominations. Gold Scottsdale Stacker bars (.9999 fine) would be VAT-exempt as investment gold.

Canada

Silver at 99.9% or higher purity is exempt from GST/HST. The .999 purity qualifies. Canada is one of the few markets where silver and gold receive identical purchase-tax treatment.

Australia and New Zealand

Australia exempts silver from GST at 99.9% purity from accredited sources. New Zealand exempts fine silver at 99.9% purity from GST, with no formal capital gains tax. Both markets use metric weights, making the 100g denomination a natural fit.

Singapore and Hong Kong

Singapore's IPM scheme exempts silver at 99.9% purity from GST for qualifying products. Singapore is a major metric-weight bullion market where the 100g format is a standard trading size. Hong Kong has no sales tax, import duty, or capital gains tax. Both markets are accustomed to gram-denominated products.

South Africa

Silver bullion in South Africa carries 15% VAT. Unlike gold Krugerrands, which are zero-rated, silver products of all types face the full VAT charge. Capital gains are subject to a 40% inclusion rate for individuals.

100g Scottsdale Stacker vs Other Silver Products at Similar Weights

The 100g silver round occupies an unusual position: it is a metric-weight product from a US mint, competing with both troy-ounce rounds and metric-weight bars from European refiners. The 100g weight (3.215 troy oz) falls between a 2 oz round and a 5 oz round, a gap that most private mints leave unfilled.

Compared to a pair of 1 oz generic rounds (which total 62.2g, or roughly two-thirds the weight of a single 100g Stacker), the 100g round offers more silver per piece with fewer items to store and handle. The interlocking mechanism means a stack of 100g rounds is more stable than a stack of loose 1 oz rounds, which is the Scottsdale product's primary functional selling point.

Against metric-weight silver bars from European refiners like Valcambi, PAMP Suisse, and Heraeus, the Scottsdale Stacker offers the interlocking round format where European products typically come as flat bars or individually sealed pieces. European 100g silver bars are produced by LBMA-accredited refiners, which some institutional buyers and international dealers prefer for provenance. Scottsdale Mint is a respected US private mint but does not hold LBMA accreditation, which may affect resale in European markets.

Within the Scottsdale Stacker family, the 100g round sits between the 2 oz round (62.21g) and the 5 oz round (155.52g). The cross-denomination compatibility means a buyer can mix all four round sizes in a single interlocking stack. The tube of 7 packaging reflects the metric weight: 700g (approximately 22.5 troy oz) per full tube. The rectangular Stacker bars (10 oz, kilo, 100 oz) offer larger denominations with their own interlocking system, but bars and rounds cannot be mixed in a single stack.

For buyers outside the US, the 100g denomination is a familiar weight that trades as a standard size in European and Asian bullion markets. The Scottsdale brand carries strong recognition in the US but is less established internationally than Swiss or German refinery brands. The interlocking feature is unique to Scottsdale among 100g silver products, providing a practical storage advantage that flat bars and conventional rounds cannot match.