Vintage Standard Coosa Thatcher RARE SCT Sewing Machine Thread Lot of 4 Dating between 1930 and 1960 as far as my research tells me. SCT was one of many textile mills that dominated the economy and built their own communities of employees around them. At the turn of the 20th century the textile industry was expanding southward to provide increased local manufacturing for Southern cotton. With the introduction of electricity, the old water-powered mills of New England were becoming obsolete, and the railroads served growing transportation needs. In February, 2015, the remaining buildings of the Standard-Coosa-Thatcher Mills were added to National Register of Historic Places. Long deserted and obsolete, these Thread spools are no longer made and becoming rarer. 4 types. 1 has no tag. Blue, green, orange, burgundy. See pics for specifics Some have wear, fraying, light staining. More of a collectors item but still have thousands of yards of use left. Green spool is 12000 yds C59