A little update:
I found two listings on ebay from the same person that has the correct type of vibrator for sale that I need for my radio!
The Radiart Type 5411 Vibrator.
https://www.ebay.com/itm/29405504020...oAAOSwvlVgR~7m
https://www.ebay.com/itm/29405497859...YAAOSwpKJgR~HE