Serro Frio foundry ingot, obv., numbered N 20, dated 1820, countermarked at left with Brazilian Imperial coat of arms on globe, elsewhere with marks for purity [22], weight [1-1-02], assayer's initials in beaded circle, numerals 4 and 8 [on its side], and three eight-pointed florettes, rev., globe countermark, weight, 32.6 grams, length, 52 mm., width, 12.5 mm. (Gomes, 41.01 this piece illustrated in KM, page 110), extremely fine, extremely rare