Vintage Apollonox table knives

Set of 12 table knives in their box. The blades are made of stainless steel, the handle is made from an old bakelite-type synthetic material in an off-white color. They are stamped "apollonox, unbreakable" and measure 23 cm. They are in very good condition. They are delivered in a brown box from the same period with a yellow interior. The box shows several rubbings on the angles and corners. The knife dividers are missing.