I have no idea what is meant by Type 70 or 71 but the SS Normandie
stamp, Scott 302 was issued first in April 1935 for the launching and reissued in May 1936 after the ocean liner was awarded the Blue Ribbon.
As you can see from the
2017 Scott Catalogue snippet there are 4 colour types and if you have
Scott 300b blue green then you are a lucky guy.
Why don't you show us what you have either scanned or photo.
