
| Producer | Refined At | Code | Brand Marks |
| Argor, S.A. | Chiasso, Switzerland | ARGO | * ARGOR S.A. CHIASSO-ASA |
| Argor - Heraeus SA | Mendrisio, Switzerland | ARHE | Argor-HerAeus SA, A-H, Switzerland |
| ASARCO Incorporated | Amarillo, Texas | ASAT | ASARCO GOLD- AMARILLO, TEXAS |
| Casa da Moeda do Brasil | Rio de Janeiro, Brazil | CASA | * CASA DA MOEDA DO BRASIL-CMB |
| Compagnie des Metaux Precieux | Ivry, France | CMPP | * COMPAGNIE DES METAUX PRECIEUX PARIS (may also contain letters CMP) |
| Ivry, France | SDBS | * SOCIETE DE BANQUE SUISSE | |
| Companhia Real de Metais | Sao Paulo, Brazil | CRDM | * CRM |
| Comptoir Lyon-Alemand Louyot | Noisy le Sec, France | CLAL | * COMPTOIR-LYON-ALEMAND, LOUYOT-PARIS (with Affineur Fondeur within octagon) |
| H.Drijfhout & Zoon’s Edelmetaalbedrijven BV | Amsterdam, Netherlands | HDZA | * H. DRIJFHOUT & ZOON-AMSTERDAM-MELTERS (within octagon) |
| Engelhard Corporation | Carteret, N.J. | ENNE | * ENGELHARD (may also be |
| * ENGELHARD NEW JERSEY-U.S.A. or ENGELHARD U.S.A.) | |||
| Carteret, N.J. | BAKE | * BAKER (within circle atop triangle) | |
| Chessington, England | ENCI | ENGELHARD LONDON | |
| Thomastown, Australia | ENTH | * ENGELHARD AUSTRALIA | |
| Aurora, Ontario | ENAU | * ENGELHARD (with circle connected to 1/2 moon to left of name; may also be ENGELHARD INDUSTRIES OF CANADA LTD. | |
| Golden West Refining Corporation Limited, Handy & Harman Refining Group Inc. | Attleboro, Mass | GWHH | * HH HANDY & HARMAN REFINING GROUP |
| Handy & Harman | Attleboro, Mass | HAND | *HH HANDY & HARMAN |
| W.C. Heraeus, G.m.b.H. | Hanau, Germany | HERA | HERAEUS FEINGOLD (with Heraeus Edelmetalle GmbH-Hanau encircling three roses) |
| Heraeus Incorporated | Newark, N.J. | HERI | HERAEUS FEINGOLD (with capital letter “E” preceding serial number) |
| Heraeus Ltd. | Kowloon, Hong Kong | HERH | HERAEUS FEINGOLD (with capital letter “H” preceding serial number) |
| Homestake Mining Company | Lead, South Dakota | HMCO | * HOMESTAKE MINING COMPANY (with HMC all within circle) |
| Johnson Matthey, Inc. | Winslow, New Jersey | MBUS | * MATTHEY BISHOP U.S.A.(within an oval) |
| Johnson Matthey Limited | Brampton, Ontario | JMMC | * JOHNSON MATTHEY & MALLORY- CANADA (within an oval) |
| Brampton, Ontario | JMCA | * JM (with crossed hammers) | |
| Brampton, Ontario | JMJM | JOHNSON MATTHEY-JM (with crossed hammers and assay stamp: J.M. LTD.-CANADA-ASSAY OFFICE) | |
| Johnson Matthey Limited (Australia) | Kogarah, Australia | MGPS | * MATTHEY GARRETT PTY. SYDNEY REFINERS (within an oval) |
| Kogarah, Australia | JMLA | * JOHNSON MATTHEY LIMITED AUSTRALIA | |
| Johnson Matthey Chemicals Ltd. | Royston, England | JMLO | * JOHNSON MATTHEY LONDON (within an oval) |
| Johnson Matthey & Pauwels S.A. | Brussels, Belgium | JMPA | * JOHNSON MATTHEY & PAUWELS (within an oval) |
| Johnson Matthey Refining, Inc. | Salt Lake City, Utah | JMRI | JOHNSON MATTHEY-JM (with crossed hammers and assay stamp: J.M.R.I. U.S.A.-ASSAY OFFICE) |
| Johnson Matthey Refining, Inc. | Salt Lake City, Utah | JMRI | JOHNSON MATTHEY-SLC (within a double oval) |
| Kennecott Utah Copper Corporation | Magna, Utah | KUAU | KUC |
| Metallurgie Hoboken Overpelt S.A. | Hoboken, Belgium | MHOV | * METALLURGIE HOBOKEN OVERPELT |
| n.v. Union Miniere s.a. - Business Unit Hoboken | Hoboken, Belgium | HOBO | Hoboken 9999 |
| Metalli Preziosi S.p.A. | Milan, Italy | MPSP | *METALLI PREZIOSI S.p.A. MILANO- AFFINAZIONE (with MP within a circle) |
| Metalor Technologies USA Corp. | Attleborough, Mass. | MUST | METALOR® (with the “MUS” assay mark) |
| Attleborough, Mass. | META | * METAUX PRECIEUX SA METALOR MP (with “MUS” Assay mark) | |
| Metaux Precieux S.A. Metalor | Neuchatel, Switzerland | MPSA | METAUX PRECIEUX SA - NEUCHATEL (with MP within a circle) |
| Neuchatel, Switzerland | SBCO | SWISS BANK COPORATION | |
| Mitsubishi Metal Corporation | Osaka, Japan | MMCO | * MITSUBISHI METAL CORPORATION (with three diamond mark within oval) |
| Mitsubishi Materials Corporation | Kagawa, Japan | MITS | Three diamonds forming a triangle |
| Noranda Mines Limited, CCR Division | Montreal East, Quebec | CCRL | * CANADIAN COPPER REFINERS LIMITED MONTREAL EAST, CANADA (within an oval) |
| Noranda Mines Limited, CCR Division | Montreal East, Quebec | NORA | * NORANDA MINES LIMITED - CCR, MONTREAL EAST, CANADA (within an oval) |
| Noranda Metallurgy Inc. - Copper | Montreal East, Quebec | NINC | NORANDA MINES Inc. - CCR, MONTREAL EAST, CANADA (within an oval) |
| Norddeutsche Affinerie AG | Hamburg, W. Germany | NAHA | NORDDEUTSCHE AFFINERIE HAMBURG |
| Ohio Precious Metals, LLC | Jackson, OH | OPM | OPM |
| PAMP, S.A. Produits Artistiques Metaux Precieux | Castel S. Pietro, Switzerland | PAMP | PAMP-SUISSE |
| Rand Refinery Limited | Germiston Transvaal | RRSA | RAND REFINERY Ltd. SOUTH AFRICA (encircling picture of springbok) |
| Royal Canadian Mint | Ottawa, Canada | RCMI | ROYAL CANADIAN MINT (encircling a crown) |
| Sabin Metal Corporation | Scottsville, N.Y. | SABN | SMC |
| Schone Edelmetaal NV | Amsterdam, Netherlands | GSNV | GUARANTEED BY SCHONE N.V. AMSTERDAM |
| Sheffield Smelting Co. Ltd. | Sheffield, England | SSCL | * THE SHEFFIELD SMELTING CO. LTD. - LONDON & SHEFFIELD |
| Tanaka Kikinzoku Kogyo K.K. | Ichikawa, Japan | TTME | TANAKA TOKYO-MELTERS |
| Umicore AG & Co. KG | Hanau, Germany | DEGU | * DEGUSSA FEINGOLD (with 1/2 sun and 1/4 moon within diamond) |
| Umicore AG & Co. KG | Burlington, Ontario | DECA | * DEGUSSA CANADA LTD. (with 1/2 sun and 1/4 moon within diamond) |
| Umicore Brasil Ltda. | Guarulhos, Brazil | DEBR | * DEGUSSA S.A. (with 1/2 sun and 1/4 moon within diamond) |
| Umicore Brasil Ltda. | Guarulhos, Brazil | UMIB | Umicore Brasil |
| United States Metals Refining Co., division of Amax Copper, Inc. | Carteret, N.J. | DRW | * DRW |
| U.S.S.R | Moscow, U.S.S.R | CCCP | *CCCP (with hammer and sickle) |
| Valcambi, S.A. | Balerna, Switzerland | CRSU | CREDIT SUISSE |
| Western Australia Mint trading as “The Perth Mint” | Perth, Australia | PMAU | THE PERTH MINT AUSTRALIA (with swan motif mint mark within circle) |
(1) Brands which are no longer produced are preceded by an asterisk (*).