Welcome to the Quilting Board!
You and me both Monica!!
I'll win the Lotto, and BUY the basement!! LOL
I found a 15 clone branded MW- probably Montgomery Wards tonight. The machine is in very good condition, but the case is ugly and worn. It's not for sale, but I may write the organization a letter. Is $50 a reasonable offer? There is also a Pfaff from the same time period, but it didn't call to me.
The Boye 20's are made for the oldest Vertical Feeds, the machine below my name. Boye 10's will work on everything else except for the New Vertical Feeds which take the 15x1. The MT X 190 work well as a Boye 10 replacement except the shank is round instead of flat so you have to orient the needle. This needle is common and you can get a wide range of sizes. Someone clever "discovered" (not me) this was a good replacement for the expensive Boye 10. I've used it with good results in New High Arms (VF1) and VF2.
Best of luck