| Issuer | San Marino |
| Year | 1977 |
| Type | Circulating commemorative coins |
| Value | 20 Lire (20 SML) |
| Currency | Lira (1864-2001) |
| Composition | Aluminium bronze |
| Weight | 3.6 g |
| Dimensions | 21.25 mm |
| Thickness | |
| Shape and Technique | Round Milled |
| Orientation | Coin alignment ↑↓ |
| Engraver(s) | Jorio Vivarelli |
| In circulation to | 1 March 2002 |
| Reference(s) | KM#67 |
| Obverse description | Smoking towers with the denomination at the bottom of the center circle and the date at the bottom of the coin |
| Obverse script | Latin |
| Obverse lettering | REPUBBLICA DI SAN MARINO
L.20
· 1977 · (Translation: Republic of San Marino 20 Lire 1977) |
| Reverse description | Circular pattern within stylized hand |
| Reverse script | Latin |
| Reverse lettering | L`IMPRONTA DEGLI INSETTICIDI
DELL`UOMO
J. VIVARELLI (Translation: The Footprint of Man`s Insecticides J. VIVARELLI) |
| Edge | Plain |
| Mint | |
| Mintage | 1977 - In sets only - 180 000 |
| Catalog ID | 9648143190 |
| Comments |
