Hildreths Jewelry Demonstration/ Advertising cartridge fountain pen. 5 3/8 inches long. This vintage Sheaffer Skrip demonstrator fountain pen boasts a clear/chrome body and a 304 nib and is perfect for any collector or enthusiast. The pen is made of metal and plastic materials and features a chrome cap. It was manufactured in the United States during the 1970s and is a great addition to any pen collection. The ink color can be personalized with any cartridge and the nib size is 301. This pen is a must-have for anyone who appreciates vintage writing instruments.