Vintage Marbled Plastic Letter Opener or Kitchen Knife

Vintage Marbled Plastic Letter Opener or Kitchen Knife. Unusual marble effect plastic knife with carved art deco design on the handle. Colors are shades of brown, gray and blue, Blade is serrated. Could be used for food or as a letter opener or desk knife. Seems to have lost a little of the knife point or long since worn down. Office, vintage, art deco, desk, kitchenware, picnic,