Main Papers Page / 1E1 of 1936; cream and semi-porous, medium thickness / 1E2 of 1937; translucent, white, with narrow, tall RA / 1E3 of 1939; white and similar to 1E1 / 1E4 of 1940; perpendicular watermark mesh, white and thin, large RA / CL1 first clays of 1941-43/ CL2 second clays of 1950-52 / NGR unwatermarked grid, thin, dark / NOP unwatermarked thick opaque, white / 2D Straight Rays; diffused of 1943, flat / 2C Straight Rays; clear of 1949-50, bright white and rough / 1L1 of 1951; small to medium RA, porous, and similar to 1E3/ 1L2 large RA / 1L3 bright white, medium RA / 1L4 medium to large RA barely visible / 1L5 dark, thin, watermark almost invisible, referred to as 'Zarate'
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