Japanese light bulb. A beautiful light bulb with intricate glass flowers inside it. My step-father bought it when he was stationed in Okinawa with the Navy and gave it to my mom after they married. You can isolate just the flowers and adjust the level of brightness in the bulb. I'm not sure what you would use it for- we never used it for fear that it would burn out and be rare, valuable and impossible to replace.
all photos © Elliott M. Burke