In the 1890’s until 1902 most cards were printed in black & white collotype with undivided backs.By the 1900’s they were producing a great number of views of Great Britain labeled as the Valentine Series.Up until 1882 they had only published views of Scotland, but they began expanding into other tourist markets especially after their postcard business took off.Other offices opened in Jamaica, Medeira, Norway, Tangier, Canada, and New York.Carbo-type and Silveresque cards were printed in black & white line block halftones to simulate photographs, while Carbotone cards were printed in sepia. Real photo bromide cards were made under the names Bromotype and Bromotone, and a series of Glossy view-cards with an embossed frame were issued under the Crystoleum Series name.Valentine also made a number of etching reproductions in these post war years.
They are distinguished by thick Tartan patterned borders with symbolic elements added.
Borderless artist signed cards were made throughout the 1940’s and 50’s with the tricolor process and issued under the Art Colour name.
Though printed with an RYB pallet, these cards retain a distinct RGB look.
But they did not anticipate the public’s growing demand for color cards and by the 1950’s their business was suffering.
In return they put most of their efforts into greeting cards. in 1963, which passed on to Hallmark Cards in 1980. Their cards are numbered on the front in hand, which sometimes makes the figures illegible.