That is a sweet little cobalt bottle DiggerBoy, I'm not sure what it contained but anything in cobalt is awesome to me. Being ABM I already know, you know the about age.[] Petty
Nice little find, Digger. Your bottle is a poison, listed by Kuhn as a KR-43. They came in many sizes, with your 1/2 ounce being the smallest. They came in cork top, and the later ones had a screw cap. Jim