Gillette White Thin Blades

Bought a razor and several packs 10 packs of Thin Gillette blades in white boxes were in the case. Some boxes have a black stripe at the bottom and some are all white. Where do these fall in the Gillette production era? I assume it is after the red and black packaging , but I could be wrong.

 

1946?
http://www.renaldo.us/grbd.php
looks like from this they came after the red and black (1938)

 

Didn't even think to look there as it wasn't a razor even though it is my go to page for Gillette razor information

 

From Mr. Razor it looks like around 1977-1978. The actual blades have date codes if you get curious enough.
http://www.mr-razor.com/Rasierklingen/Rasierklingen.htm

 

That means opening the sealed boxes!

 

much more helpful with the pictures than guessing from the text. I change my answer to 1977-78

 

Those upper ones were made up until 1989 in the U.S. They are teflon coated and are excellent. The lower ones are late 60-s to mid 70-s I think.