The Argentina 1935-51 Definitive Series
A Stamp Collecting Blog Dedicated to one of the Most Interesting Series of the 20th Century
Monday, October 12, 2009
Small threads in two late papers for the 20cSC
Rein noticed small threads in the clay (CL2A) and regular (1L1) papers. I find these as well, and in several colors.
A 1L1 example:
a clay dark blue example,
and a second clay dark blue example.