Once I pieced the block (as a test of the motor/power supply), I sat down at the computer, and tried to find out when/who made this powerhouse of a machine.
So far, my research shows (according to the label on the motor) that even though she is "badged" World's Rotary," she's really just a White sewing machine, which is not rare or anything, (but still SUPER awesome!). The motor also says that it was "patented October 25, 1927," which gave me a time frame at least!
After searching and googling for an hour, I finally found this image, so, based on my machine's serial, I'm going with 1931. So today, we're celebrating her 80th birthday! CRAZY!