BKBoiss
Gold Member
In 1991 I was in a second hand store and seen one ( it had a handle)for $1 the inside was stained jet black. Knowing I'd paid $74 for the original back in 1974 I purchased it.
Took it home and for anyone who may no be aware of this way of cleaning put in a couple faults teeth cleaning pellets & it came out as shiny as the day it was made.
My wife and I got married at 19 and 20 respectively. She has been cleaning my cups and thermos with teeth tablets since day one, (learned it from her mother).