Brazil, 1835 AD., Pedro II, countermarked 40 Réis on older 80 Réis of the Rio de Janeiro mint, KM 444.1.

Brazil, Pedro II (1831-89), countermarked 1835 AD. on a coin of the Rio de Janeiro mint, 1828 AD.,
40 Réis on 80 Réis (ø 39 mm / 29,18 g), copper, 28.69 g. theor. mint weight, original coin mintage 26.524.000 , axes medal alignment ↑↑ (0°), milled edge with incuse surrounding ornament line: IIIIIIIIIIIIIII ,
Obv.: IN + HOC + SIGNO [+ VINCES +] , ("With this sign you will win") , crowned coat of arms in a 3/4 wreath.
Rev.: 40 // [PETRUS. I. D. G.] CONST. IMP. ET. PERP. BRAS. DEF. / [18]28 R , ("Pedro I, by the grace of God, Constitutional Emperor and Perpetual Defender of Brazil") , value number within wreath of floral decorations, circular countermark with new value 40 on old value 80 (still visible).
KM 444.1 (on KM 366.1) .

Year / Mint Mark / Details
1823 R KM 444.1
1824 B KM 444.2
1824 R KM 444.1
1825 B KM 444.2
1825 R KM 444.1
1826 B KM 444.2
1826 R KM 444.1
1827 B KM 444.2
1827 R KM 444.1
1828 B KM 444.2
1828 R KM 444.1
1829 B KM 444.2
1829 R KM 444.1
1830 B KM 444.2
1830 R KM 444.1
1831 B KM 444.2
1831 R KM 444.1

KM: "In order to prevent chaotic conditions resulting from local and private countermarking, the government passed Law#54 of 6 October 1835 ordering all coppers countermarked according to the following standards:
2 oitavos = 7.18 g = 10 Reis
4 Oitavos = 14.34 g = 20 Reis
8 Oitavos = 28,69 g = 40 Reis
The countermarks consist of neat numerals within a circle, having a plain or shaded field."