Insulators as follows (left to right, top to bottom) -- actual postage additional:

U-629B (ear incuse) Westinghouse logo - no issues -- $8

sim U-629 (skirt incuse) LOCKE / 8881 / USA / V -- no issues -- $8

U-297 no markings, no issues -- $6

U-298 (dome incuse) PINCO-K -- no issues -- $6

U-629C no markings, awesome near yellow! No issues -- $12

sim U-238A no markings, hidden flat base chip, several deep wire rubs in wire groove, flaking on sharp edge of lower wire groove -- $8

sim U-238A no markings, a couple deep wire rubs in wire groove, flaking on sharp edge of lower wire groove -- $10

U-475 no markings, light tan mottled glaze! no issues -- $10

sim U-611 no markings, cool piece of porcelain glazed between the inner and outer skirt! one tiny flake -- $10

U-447 (ear incuse) PINCO-I -- no issues -- $8

U-447A (ear incuse) PINCO -- couple small ear flakes -- $6

U-601 no issues - deep cobalt! -- $8