Heavy glass lens marked MACBETH - 3 - 25, which AI thinks is the manufacturing date and PAT. 3 - 25 - 24 which AI thinks is the date the patent issued. This was acquired in an auction in the greater St Louis, MO area from a RR parts collection. This is not a toy, this is for a railcar or caboose or a RR something ?? Note the AI assessment detail included in the pictures. If it goes to a 501(c)3, would consider donation and St Louis area delivery
