Made by Leopold Ascher Brush Corp, New York, NY
The company also made Century brushes
Leopold Ascher was a German-born Jewish brush maker in New York. In addition to his Strong Set trademark he oddly also trademarked this symbol for his brushes in 1922 that was very similar to the Nazi swastika.
No Model Number
Disclaimer: This site is not affiliated or endorsed by Rubberset Company, a division of the Sherwin-Williams Company. Rubberset Company has a website with their summarized history here. This site is exclusively concerned with the early history of the company as it relates to their shaving brushes and was compiled from public information freely available on the web. It is intended to be informational in nature, not commercial.