Twenty-five centavos
Type 1 (Scales)
KM-443 1951 25c
These coins, authorised by a decree of 19 September 1949, had the classic Balance Scale on the reverse. Their composition was 50% copper, 30% silver, 10% nickel and 10% zinc. Weight was 3.333g. Mintage was
| Year | Mintage |
| 1950 | 77,060,000 |
| 1951 | 41,172,000 |
| 1952 | 29,264,000 |
| 1953 | 38,144,000 |
Type 2 (Madero)
KM-444 1964 25c
The second type was authorised by a decree of 30 December 1963. Their composition was 75% copper and 25% nickel, and weight 5,5 g. Mintage was 20,686,000 in 1964 and 180,000 in 1966.
The 1966 coin is known with two varieties, a Closed Beak and an Open Beak.