CARRIBEAN TERRITORIES, British Virgin Islands. Tortola. AR 4 Shilling 1½ Pence (40mm, 12.04 g). Type IV Countermarked issue. Struck 1805-1824. TIRTIIA in rectangular incuse countermark on cut [17]95 FM Mexico City 8 Reales of Carlos IV (KM 109). KM 20. Host coin Fine, countermark Good VF, toned.