1) Bloc 
[Scotland] The Progressive Party was a municipal political organisation that operated in several Scottish cities and towns in the 20th century. It was based on tacit anti-Labour co-operation between the Unionist Party, Scottish Liberals and Independents. National political parties were rarely active in local politics but the rise of Labour ...
Colour proofs taken at each stage of printing showing each colour printed singly and then superimposed on the preceding colour. 
A set of proofs which show the different inks separately and combined in various permutations.
Colour proofs taken at each stage of printing showing each colour printed alone and then superimposed on the preceding colour.