Blackberry

We were in Carthage Missouri this past weekend attending a 50 year class reunion for my sister and did some thrift store shopping. I located these singer accessories along with this manual for $8. I wasn't familiar with the number on the manual but managed to move the accessories around in the plastic bag to know that they would fit several of my singer machines. When I opened the bag and looked at the book. Inside was a Davis Machine Warranty Certificate from 1955 and inside the book was a picture of this machine. Does anyone know anything about this machine. I only have the book. I believe this is most of the accessories that would have been with the early singers like the 201, FW and 15-91. I had just missed out on a bid on ebay for a set that eventually sold for $24 so I feel like I made out like a bandit. I didn't get the green box but maybe someday one of those will come along too.