Dating valentine sons postcards
These were more brightly colored than their typical cards because they were produced through tricolor printing.In these same years they produced a series of color and black & white moonlit views, a card series depicting Edinburg in paintings, greeting cards, real photo cards, and a series of views in sepia called Selectypes.These came in a number of variations including collotype cards that were hand colored, printed in various monochromatic colors and printed with tints.They were mostly numbers in series of four to five digits.Carbo Colour cards from the 1930’s also came with Tartan borders but many were also printed with plain white borders.They were printed as tinted halftones, often with ben day patterns added.This firm was one of the most prominent and prolific publishers of postcards from early court-sized postcards in about 1895 through to the 1960s.
Colourtone cards were issued in the 1930’s and printed at tinted halftones.
They continue using lithographic dots of fawn rather than yellow, and their blues and reds tend to be distinct.
They are distinguished by thick Tartan patterned borders with symbolic elements added.
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.