Here are six colored porcelain pieces as follows -- actual postage additional:

Nice olive green cable, no markings, VNM -- $8

Awesome blue unmarked Pittsburg signal -- one skirt flake and several inner skirt flakes -- $8

Scarce bright green small cable top incuse marked PP (Porcelain Products) -- VNM -- $18 (SOLD)

Nice tan signal incuse marked PINCO -- VNM -- $5

A second olive green cable, no markings, VNM -- $8

bright yellow signal marked PP (Porcelain PRoducts) on the dome -- VNM -- $10