This was found in a large estate collection of vintage tech items ranging from telegraph to what you see here-- I dont know anything about these other than what I could find on google and that they were all neatly stashed away in various boxes/foam etc --  It is listed as found and sold as shown --  You will get the exact items shown in photos-- You will need to "Be the expert and bid accordingly" - Please enlarge photos for better details of the item and condition. I do try to combine shipping to save you money.