I also have a 1950 Brother Sewing Machine. I do know my mom bought it in 1950, the year before I was born. She made most all of my clothes for me on that machine!
I have Googled Antique Brother Sewing Machine, but, only came up with CURRENT Brother dealers who sell ONLY Brother Sewing Machines.
I'm not sure if this is considered Antique yet? You may want to check with the people on ANTIQUE ROAD SHOW........they sometimes answer questions.
I am going to TRY an upload some of my pictures of my machine so you can look at it.