Quote:
Was any new Peruvian intaglio design released to the public with a grill after February 1890?
There are no Peruvian postage stamps with new designs issued after 1890 that have grill.
In1894 were issued the last ones with grills but were remnants of the 1874-79 stamps plus those received at the end of the war that had been kept in custody in Guayaquil-Ecuador (all printed by National Bank Note Co).
These were overprinted with the portrait of the recently deceased President Remigio Morales Bermúdez..

Deficit stamps (Postage Due):
Some old stamps with grill were overprinted and issued later:
1897 (20ct. blue, llama and ship) overprinted DEFICIT
(1ct. brown, Coat of arms) overprinted FRANQUEO for postal use.
1898 (20ct. blue, llama and ship) overprinted TELEGRAFOS.
1902 (20ct. blue, llama and ship) overprinted DEFICIT-5 CENTAVOS
In 1895 the new stamps called "La República" were issued (Inauguration of the presidential term of Nicolás de Piérola).
They were engraved and printed by ABNCo. (Charles Skinner, vignette and George Henry Seymour, frame & lettering) and their imprint (American Bank Note Co.) can be found in the 4 margins of the sheet and on each stamp.

