I picked this one up the other day, I had never seen or heard of a adjustable SE. The razor is very well made and the shave is amazing
I found some info on this razor in the Waits Safety Razor Compendium. It was made by Superman Safety Razor Co. ( or the Supreme safety Razor Co). Made in Unionville, Connecticut. U.S. Patent No. 1051094, by William C. Finney.