1662 AD., Spain, Felipe IV, Segovia mint, Æ 16 Maravedis, Cayón 5237a.

Spain, Felipe IV, Segovia mint, moneyer / ensayador "BR", 1662 AD.,
16 Maravedis (25-28 mm / 3,88 g), billon (0.0694 silver), ca. 4 g mint weight, mintage ? , axes medal alignment ↑↑ (ca. 0°),
Obv.: • PHILIPPVS • IIII • D • G , around his bust facing right, interrupted by dots containing tiny crosses - alrededor de un círculo que contiene un busto del rey a derechas.
Rev.: HISPANIARVM REX 1662 / (aqueduct) / {BR} - • 16 • , around crowned shield of arms, horizontal arrangement of mint mark (aqueduct) and moneyer´s monogram {BR}, vertical value number between dots - alrededor de un escudo de armas coronado, valor 16 invertido a la derecha, acueducto (ceca) sobre BR (ensayador) a la izquierda.
Cayón (1998) p. 638, 5237a ; KM 172.6 ; tipo MD-6 de www.maravedis.net .

These Spanish billon coins were struck in denominations of half, one, two, four, eight and sixteen maravedis (34 maravedis = one real in silver). The sixteen maravedis type was struck only briefly (1660-64) and then abandoned, most likely due to rejection by the populace. This specimen was struck at the Segovia mint (mintmark: aqueduct, var. value number between dots) and preserves some of its original silvering. Similar coins were emitted from Trujillo, Granada, Seville, Madrid, Toledo and Valladolid:
KM 172.1 Burgos
KM 172.2 Coruña
KM 172.3 Cuenca
KM 172.4 Granada
KM 172.5 Madrid
KM 172.6 Segovia
KM 172.7 Sevilla
KM 172.8 Toledo
KM 172.9 Trujillo
KM 172.10 Valladolid

Year / Mint Mark / Mintage
1661 KM#172.3
1661 BR KM#172.6 (Segovia)
1661 M KM#172.10
1661 M KM#172.8
1661 M KM#172.9
1661 N KM#172.4
1661 R KM#172.2
1661 R KM#172.7
1661 S KM#172.6
1662 KM#172.3
1662 BR KM#172.1
1662 BR KM#172.6
1662 M KM#172.10
1662 M KM#172.8
1662 M KM#172.9
1662 MS KM#172.5
1662 MY KM#172.5
1662 N KM#172.4
1662 R KM#172.2
1662 R KM#172.7
1662 S KM#172.6
1663 KM#172.3
1663 BR KM#172.1
1663 BR KM#172.6
1663 M KM#172.10
1663 M KM#172.8
1663 M KM#172.9
1663 MS KM#172.5
1663 MY KM#172.5
1663 N KM#172.4
1663 R KM#172.2
1663 R KM#172.7
1663 S KM#172.6
1664 KM#172.3
1664 BR KM#172.1
1664 BR KM#172.6
1664 M KM#172.10
1664 M KM#172.8
1664 M KM#172.9
1664 MS KM#172.5
1664 MY KM#172.5
1664 N KM#172.4
1664 R KM#172.2
1664 R KM#172.7
1664 S KM#172.6

serie de vellón (1602-1621), debía tener 20 granos de plata, es decir, una ley de 69,4 milésimas y una talla de 816 maravedís por marco ponderal de 230 gramos,