levis 501 vs 501xx
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The XX designation is historical, the Lot No. 501 was used as early as the 1890s (though not necessarily on a back patch) based on Amoskeag XX 9 oz. denim (based out of New Hampshire). The change to Cone Mills occurred ca. 1915, but the XX designation remained.
If the XX designation was dropped then why do some new STFs still have that printed on the label?
the above statement is completely incorrect.
not to be a jerk but if someone has a question it is really unhelpful to just give a guess. if you dont know dont answer.
as get smart said it is (and always has been) the designation for denim that is NOT preshrunk.
same as shrink to fit.
That is just a marketing ploy by Levis in the late 80s to distinguish between pre-shrunk and shrink-to-fit denim. Apparently XX == supertough denim. I guess the two horse symbol isn't sufficient.
I think 501 STF means common Levis 501 that made from Mexico and sold in Macy's.
I have a pair of new with tags new old stock 1990 Levi's 501's. The tag has the definition of the xx on the tag and nowhere on the tag or jeans does it say shrink to fit. It is my guess that somewhere along the line shrink to fit was included on 501's with the xx distinction. This tag that I will post states that xx means "special top weight denim". Its my guess that all 501's that are shrink to fit are xx but not all 501's that are xx are shrink to fit.