We supply high quality precious metal blanks to North American Mints and also to the international Minting Industry. Although we specialize in fine silver and fine gold blanks, we have the capability to produce blanks in platinum, various precious metal alloys as well as base metals such as bronze and copper.
Our standard products come in a wide range of sizes but we also provide custom blanks according to our customer requirements in just about any size or shape. Additional features offered are rimmed and annealed blanks. We use high quality material to produce products which are tested, monitored and approved by some of our most demanding and knowledgeable customers around the world.
SMI supplies blanks in the following metal compositions:
- GOLD - 9999 Fine Gold, 22 Karat Gold, 14 Karat Gold and 18 Karat Gold
- SILVER - 999 Fine Silver, 925 Silver and 900 Silver
- BASE METAL - Copper, Bronze, Brass, Nickel Silver and Silver plated Base Metal.
The quality of the surface finish requested is based on industry standards.
In general blanks should be free from blisters, porosity and laminations
which would adversely affect the quality of the coined product.
The terms and definitions used to describe and establish the surface characteristics and requirements for minted products are,
Ball Polished – Blanks with a bright surface, lightly textured on both sides. This finish is achieved through a wet tumbling operation using polished stainless steel media and specific chemicals. These blanks can be used for proof and proof-like coins and medallions
Burnished – Blanks with a shiny surface and a visible textured peening finish which is achieved through a wet vibratory operation; normally with stainless steel media and specific chemicals. These blanks can be used for proof-like and high quality un-circulated coins and medallions.
As Rolled – Blanks with a uniform finish achieved during the final rolling stages without further mechanical or chemical surface treatments. These blanks can be used for un-circulated and bullion coins.
Shop loading and product mix at time of ordering may have some impact on capacity. However the following illustrates our typical capacity for the production of a one (1) ounce blank. Please contact us with your requirements.
Silver, 1 ounce
- 999 Silver - 1,000 to 200,000 per week
- 925 Silver - 1,000 to 50,000 per week
- 900 Silver - 1,000 to 150,000 per week
Gold, 1 ounce
- 9999 Gold – 1,000 to 20,000 per week
- 22 Kt Gold – Please contact our Customer Service
- 18 Kt Gold – Please contact our Customer Service
- Various alloys – Please contact our Customer Service
Terms and conditions with regard to metal supply depend on current market prices or alternatively metal can be supplied by the customer. Please contact us for details.