One on the right is base embossed with segmented threads. It is NATIONAL INSULATOR CO [EIN010] in light aqua. Does have a chip on the upper wire ridge around 0.5".

The one on the left is skirt embossed with regular threads. NEW ENG. TEL & TEL CO. This is [EIN010]. It has a small chip of upper groove and another on upper groove on back. This also has a really nice amber streak that makes up for the minimal damage. The rest looks good. Very tough piece to find.

$350us for the pair. I'll pay shipping in CDN and Continental USA.