I am very proud to present what appears to be a new surplus Horizontal Situation Indicator from Astronautics Corporation of America. The part number is 132750. It has a Sikorsky part number which is 70450–01040–113. It appears to be a new unused condition. Feel free to ask any questions. If you have any information you would like to pass along it would be greatly appreciated, and I am always happy to learn. Thank you very much for looking. Good luck and happy bidding.