100% Mercerized Crochet Cotton
Size 10 Art. / Article 150
“Fast Color -- Will Boil”

Known put-ups:
125 yard spools
250 yard balls
500 yard balls 4 ounces/120 grams with core.
550 yard ball for white

label reads
“For Crocheting and Knitting doilies,tablecloths, bedspreads, fashion items Art. 150 American thread CO. Stamford Conn 06905”