| Obverse description | Centerpiece ornamented, between garlands of fruity laurel and with smooth surface, bearing the legend `20 / DECIM` in two lines. Surrounding this one in semicircular superior form, the legend `BANCO NACIONAL` and under exert `BUENOS-AYRES / 1830` in two horizontal lines. Graphite of small triangles with horizontal striping. |
| Obverse script | Latin |
| Obverse lettering | BUENOS - AYRES . 1830 BANCO NACIONAL. 20 DECIM |
| Reverse description | Inside a striped circle of azure with the legend `ARDESCIT ET VIRESCIT` (with separating points or not), Phoenix bird extended with the head turned to its right by where a portion of radiant sun appears. Graph similar to the obverse. |
| Reverse script | Latin |
| Reverse lettering | ARDESCIT ET VIRESCIT |
| Edge | Plain |
| Mint | |
| Mintage | 1830 - CJ# 4 - 1830 - CJ# 4.3 - |
| Catalog ID | 6573218550 |
| Comments |