Mexico, 1886 AD., Zacatecas mint, 8 Reales, KM 377.13.

Mexico, Zacatecas mint, assayer JS: J.S. de Santa Ana (1867-68 and 1876-86 AD.), dated 1886 AD.,
8 Reales (ø 39 mm / 26,89 g), 0.903 silver, 27,07 g. theor. mint weight, mintage 5.303.000 , axes coin alignment ↑↓ (180°), machine milled edge,
Obv.: REPUBLICA MEXICANA , eagle with snake in beak on cactus, wings spread, half wreath below; punchmarks below eagle´s left wing.
Rev.: LIBERTAD / 8 R. Zs. 1886. J. S. 10 Ds. 20 Gs. , abbreviations for: value and denomination . mint . year . assayer's initials . purity of silver (12 dineros = .999 Silver, 24 Granos = 1 Dineros, so 10Ds20Gs = 0.902777 Silver). below cap with rays; three punchmarks: squre pattern above central ray, on cap (a Z with horizontal line), and a half circle of rays above Z.
KM 377.13 .

the legend of Tenochtitlan - how Mexico City was founded: As the Mexica, a small Mid-Mexican tribe were chased from their grounds, they had to look for new space. Their most important god, Huitzilopochtli, told the tribe they must build their new town on the place where they should find an eagle on a cactus, eating a snake. They found the place in the marshes of Lake Texcoco. The Mexica became the Aztecs and Tenochtitlan turned into Mexico City.

type minted 1824-1897 in different mints:

Mint Marks:
A, AS - Alamos
CE - Real de Catorce
CA,CH - Chihuahua
C, Cn, Gn (error) - Culiacan
D, Do - Durango
EoMo - Estado de Mexico
Ga - Guadalajara
GC - Guadalupe y Calvo
G, Go - Guanajuato
H, Ho - Hermosillo
M, Mo - Mexico City
O, OA - Oaxaca
SLP, PI, P, I/P - San Luis Potosi
Z, Zs – Zacatecas

Year / Mint Mark & Assayer / Mintage / KM#
...
1885 ...
1886 AE 120,000 KM 377.11
1886 AM 571,000 KM 377.3
1886 As ? KM 377
1886 Ca MM 2,483,000 KM 377.2
1886 Cn ML ? KM 377
1886 Do MC 955,000 KM 377.4 overdate varieties exist
1886 Ga JS 1,038,999 KM 377.6
1886 Ga JS/H ? KM 377.6
1886 Go BR ? KM 377.8 overdate variety exists
1886 Go RR 4,127,000 KM 377.8 overdate varieties exist
1886 Ho FG ? KM 377.9
1886 Ho FM 225,000 KM 377.9
1886 JD ? KM 377 overdate variety exists
1886 ML 857,000 KM 377 overdate variety exists
1886 Mo MH 7,558,000 KM 377.10
1886 Pi LC 3,347,000 KM 377.12
1886 Pi MR ? KM 377.12
1886 Zs FZ ? KM 377.13
1886 Zs JS 5.303.000 KM 377.13 overdate varieties exist
1887 ...
...