Part 19a

19a.bk1 Ten spokes, black, no boss	19a.gy Grey with one hole at 1/8'' diameter	19a.bk2 Ten spokes, gloss black, boss on one face only	19a.bk3 Gloss black, boss through entire wheel, single tapped
19a.bk Gloss black, double-tapped boss through entire wheel	19a.mb1 Matt black, double-tapped boss through entire wheel ²	19a.dr Dark red, otherwise as above	19a.rg Dark red, with dark green spokes
19a.nb Navy blue	19a.re Red	19a.mb Matt black (stamped Made in England)	19a.lr Light red, stamped Made in England ¹
19a.bk4 Gloss black