Have you seen this? I'll bet it is one of those REGUS Adjustables. https://www.ebay.com/itm/Vintage-Gillette-Fatboy-razor-N-1-/254680548273 Originally listed as a Gillette Fatboy. The seller was corrected and told that it was the Fatboy's slender brother the Slim. He relisted it as Gillette Slender Brother.