I need this info as quick as possible. I found a bottle on eBay, that is a deep purple, and I don't know if it is irradiated or not. It is embossed F.C. Banker/Fulton Chain N.Y. Are there any other known examples?
It's definitely irradiated. That deep purple color doesn't occur from natural sun exposure.
There are three listings on Hutchbook from that bottler, two of which are rated as Common. That particular variation is listed as Common. I hope this helps!