| Obverse description | Two parallel horizontal grooves, among them CTBC, preceded to the left by a stylized arrow pointing to the right. |
| Obverse lettering | CTBC (Translation: Telecommunications Company of Brazil`s Central) |
| Obverse script | Latin |
| Reverse description | Horizontal groove in the center. Below the groove, term, read from top to bottom FONTAMAC SP. |
| Reverse lettering | FONTAMAC SP |
| Reverse script | Latin |
| Mint | Indústria Metalúrgica Fontamac, São Paulo, Brazil |
| Mintage | ND
(1970-1997) FONTAMAC - Port#170 Reverse lettering `FONTAMAC`, `SP`; Medal alignment - ND (1970-1997) FONTAMAC - Port#171 Reverse lettering `FONTAMAC`, `SP`; Coin alignment - ND (1970-1997) FONTAMAC - Port#172 Reverse lettering `FONTAMAC`, `1`; Medal alignment - ND (1970-1997) FONTAMAC - Port#173 Reverse lettering `FONTAMAC`, `2`; Medal alignment - ND (1970-1997) FONTAMAC - Port#174 Reverse lettering `FONTAMAC`, `3`; Medal alignment - ND (1970-1997) FONTAMAC - Port#175 Reverse lettering `FONTAMAC`, `4`; Medal alignment - ND (1970-1997) FONTAMAC - Port#176 Reverse lettering `FONTAMAC`, `5`; Medal alignment - |
| Catalog ID | 9818376340 |
| Comments |