The Vintage Tide Water Oil Co. Advertising Mechanical Pencil is a unique collectible item that features a continuous twist mechanism and is made of plastic. With a nod to history, this pencil bears the branding of the Tide Water Oil Co., adding a nostalgic touch for collectors of vintage pens and writing instruments. Perfect for those who appreciate the charm and craftsmanship of older writing tools, this lead pencil is a must-have for any enthusiast of vintage writing instruments.  Colntains actual floating oil in top of pencil.