🔎 UNIDENTIFIED Needing help identifying the backmark on this button

[Ripcon]

I found this button near Vicksburg, MS...It's the back mark that I'm most curious about. It has LONDON at the top and TWYST at the bottom separated by 2 asterik stars. In all my years, I've never seen this word on a button back. Is Twyst a British surname....maybe a family button company Any help with this is appreciated.