I am looking for the first electronic money identifier for the blind. Here is the information I have: It was developed by NASA in the early 1970's, and produced by Marchak Engineering, which doesn't appear to be in business today.

Here is a description of the device:

Also, recently somebody was selling a photo of the device on eBay if it helps to identify the device:
https://www.ebay.com/itm/1973-Press-Photo-Device-for-Reading-Money-for-the-Blind-mja45965-/392150972987

I am looking for further information about the device, practically all I have is the above quote. I would appreciate any information or any contacts. Ideally, I would love to get one of these devices preferably in working condition, but I'm interested in any solutions.

Thank you for your help.