Insulators as follows - actual postage additional:

CD 104 no embossing (Pennycuick mold) -- tiny base flake and factory annealing lines in the threads -- cool early style -- $25 (SOLD)

CD 133.4 (dome) PATENT / DEC.19.1871 // 3 (skirt) D - 1/2" skirt annealing fracture on side and a few flat base flakes -- $45