Extraordinarily-high relief (EHR) goes beyond what high and even ultra-high relief techniques can accomplish and elevates the subject matter to around 6 mm. The striking visual effect of each coin in your series that becomes more of a sculpture than a simple embossing is given an exceptional brilliance with innovative proof finish, making the silver shine like never before.
Each coin features an ingenious approach to coin design. These are the first proof-quality coins struck with EHR – a new term in the world of minting. EHR is defined by an impressive relief that reaches to around 6 millimeters on a coin of only 36 millimeters in diameter and 1 oz. in weight. Ultra-High Relief coins barely reach 2 mm of height and standard relief coins remain almost flat in comparison.
The exceptionally deep strike allows the grizzly bear head to elevate mere embossing to a sculpture faithful to the anatomical proportions of an actual bear head. The relief is so extreme and pronounced that the modeling and tooling work had to be approached in an unorthodox manner. The engravers had to adapt their normal coin modeling procedures, CNC machining strategies and tool polishing methods to accommodate such an extreme relief.
Second coin design:
The reverse sculpture by Alex Tirabasso features a multifaceted grizzly bear head built out of 498 polygons. The three-dimensional form protrudes from the flat coin, invoking both nature and geometry in its execution. The extraordinarily high relief plays an integral part of the design, introducing the coin among the first of its kind in the world—sharp, brilliant and doing away with the conventional flatness of minting.
Did you know…
The brown bear is one of the largest carnivores in North America, measuring up to three meters in length and can weigh up to 600 kg. Unlike other mammals that can reproduce multiple times per year with plentiful litters, bears usually have only a couple cubs once about every three years and carry them for six to nine months, almost like humans.
Grizzlies can hibernate for up to seven months per year. They hunt actively in preparation and stack up food reserves, then enjoy a long nap during which they do not eat nor defecate.
Please stay tuned as we bring you the final issue in the Multifaceted Series, the Lynx.
Metal Content: 1 Troy Ounce
Manufacturer: Royal Canadian Mint
Diameter: 36 mm
Mint capsule, Branded Beauty Box, Serialized Certificate