All part of the Chambers system. This light green CD 132.4 is embossed on the dome PATENT over DEC. 19 1871. There is one chip on the bottom flange about 1/2" and not deep. On the base there are a few flat sliver chips ( nothing that distracts from the displaying of the insulator). This is a tough piece to come by and the condition demands a fair price. I'm offering it on Icon for $775. No premiums involved. I pay the shipping. You own it tonight. Need time to pay for it? Just ask me. I'm easy to deal with.