Your base looks like a Wheeler & Wilson to me. Congrats on the 28. Too bad about the broken parts.
I forced my daughter's 99 to break loose some shellac that I had applied. I bent the needle bar and broke part of the crank mechanism for it.
I passed up a $16.00 Bernina-it looked like an 830 record- at our local Goodwill. I've learned since that if it says Bernina and is $16.00 to go ahead and buy it.
Rodney