CORTICELLI EMBROIDERY SILK. ro OUNCE SPOOLS. FLC … Silk sold on this style of spool is used extensively for flannel embroidery,for which it is well adapted. It can be had of enterprising dealers in four sizes,viz.: E, EE, F and FF, from finest to coarsest, in order named, as shown inengraving. This size of spool can only be obtained in cream white,…