PRE-UPU UNDERPAID MAIL TO GERMANY; 19 June 1875 env. to Germany franked 50c pair with circular "P.C" cancels with framed "Westindien/uber New York" - four examples on mail from Cuba believed to exist, framed "UNPAID" h.s. applied in NY and large bold seriffed "7"(cents) credit to USA h.s. deleted and rated '80'pf. NY transit cds also on front. Ex Kouri. PF (1989) & Wijnants (2021) certs. Cross Reference: UNITED STATES OF AMERICA, POSTAGE DUE STAMPS & COVERS, GERMANY (Image)