Universal postal union British India post card used in Zanzibar with blue one and a half anna Queen Victoria stamp, 1891

Universal postal union British India post card with blue one and a half anna stamp. Description in source: ZANZIBAR - 1891 1 1/2a blue 'Indian' PSC to Germany used at ZANZIBAR via French ship. 1891 (DE.4.) use of Indian (unoverprinted) 1 1/2a blue on cream postal stationery postcard addressed to Germany (genuine use with long message) cancelled by ZANZIBAR squared circle cancel with REUNION A MARSEILLE/L.V.No.2 maritime handstamp applied and with HAMBURG arrival. A scarce use of this Indian stationery in Zanzibar