Here I'm showing a nice quality no name mechanical pencil. This one is almost certainly a British example, I think, maybe  ... Moving on from that brink, the piece features a gravity feed, button activated clutch pencil. The clutch (prongs at the pencil tip), grab and release the lead for use or storage.The pencil is made of hard rubber and was probably produced prior to 1920. It measures 5 3/8 inches in length.