ANTIQUE TUF-NUT ADVERTISING TWO BLADE KNIFE. Knife is in mint condition. Reads "DEMAND....TUF NUT WORK CLOTHES" in red TUF-NUT logo on white background. They were given away with the purchase of high quality jeans and workwear. Pre 1970 and most likely in late 50's and 60's. Great addition to vintage pocket knife and advertsing collections.