Found this purple CD 1678 162.4 SB on ETSY and the purple looked very weird. Possibly that this has been irradiated. Price was cheep and looked legit because of the damage. Link down below. This guy has many purple insulators that are probably the same victim insulators that have been irradiated.

https://www.etsy.com/listing/716659348/dark-purple-1678-insulator?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=Canadian+glass+insulator&ref=sr_gallery-1-32&organic_search_click=1