Okay, I know this is a REAL long shot but here goes. I found this Sperry Elevation Gyroscope in the personal effects of a B-17 pilot. There are no markings to what aircraft it might have belonged to. The part number and serial number are very clear in the photo. I have searched the internet for any database that might have it and have not found anything. I am sure a ton of these were manufactured during the course of the war. They were also used on Naval guns as well but I doubt this one came from a ship. Just wondering if any sharp person on aircraft parts might have an answer or a clue. Thanks in advance!