I knew it was Miriam when someone posted it on the Vintage machines FB page! (Besides the fact that the person named Miriam, she has a unique style!)
I will say this...at the thrift store, I wouldn't give more than $20 for that machine. From Miriam? Worth every penny of the asking price, because I know it's been serviced, and because I know that Miriam isn't going to sell crap and try to tell you it's wonderful!
I enjoyed reading it Miriam, you did a GREAT job with describing this thread injector!