Size: Approx 4 3/16 inches by 5/16 inches. Each lead is approx 4 inches long
A pack of vintage pencil leads from, I would think, the 1940s. Each pack has eight 4 inch long leads in a paper-covered wooden tube with a metal stopper at either end. These will fit any pencil that takes the 1.18mm diameter leads. These are rather interesting and rather unusual leads, being the old-fashioned purple copy leads. The line produced by these leads appears at first to be a standard graphite line, but it has a slight purplish hue. This is caused by the addition of a water-soluble purple aniline dye that is added to the lead when in powder form. The copy leads were used to enable copies to be taken of a document and also because of their indelible nature. Once you have written with one of these, you can damp a piece of tissue paper, and carefully press against the writing, it will transfer a purple image of the writing onto the tissue paper.
This is part of a consignment of old stock Everhsarp leads I have purchased. The tubes are sealed, but please note that I have opened one of the tubes to verify the thickness and number of leads inside. Please let me know at time of ordering if you'd rather have a sealed tube instead of the one I have opened.