I have posted this one in a few places, but maybe not here. This is one of my Astros so far. I remain convinced that there is somewhere a space-flown sheath besides the "slot" in the very early Mercury survival kits. I do not believe that the leather sheath would ever have been flown due to flammability issues. I have a very good selection of period MILSPEC aerospace fabrics and webbing, but need a starting point. This image does not show the screwdriver.
http://i1302.photobucket.com/albums/ag133/toadboy65/astro_zpsf2ab4492.jpg