Rare Vintage Regent Sheffield Forever Sharp Stainless Steel Steak Knife Set

Rare Vintage Regent Sheffield Steak Knife Set in original box. Set of 6 serrated knives are made of stainless steel and are guaranteed forever sharp and have modernist retro wooden handles. These belonged to my grandparents and I don’t think they were ever used but the box has wear, as shown in photos. Measurements: Full knife: 8.25" long Blade: 4" Box: 9.25" x 5.5" Has marking on box of 6170.