F1046 FRANKLIN E. DARROW RAWHIDE FLASK; Number 1246 in Riling’s book. 6-3/4 inches from the bottom of the body to the bottom of the charger. Die-pressed rawhide flask. The inventor claimed it to be “the most durable flask ever made” with the added advantage of translucence so that the contents could be estimated. 2 eyelets with green carrying strap. Screw-off patented top adjustable with inside spring. Adjustable charger with 3 graduations. Missing the Adjustment Stop Screw.