Heat Controller age

Can someone tell me the age of this unit?
I think Comfort Aire might have been another name they go by.
Serial # CB5D302 F46935272

Much appreciated!
Andy B

Without getting my book, it looks like Rheem or Ruud serial number where the first 2 numbers after the “F” in the serial number are the week and the next 2 ar the year…46th week of 1993.

That is what i told them but told them not for sure.
Thanks for you help!