Dräger Universal Prüfgerät RZ-25 German Vintage Aviation

[dvsge]

Hi there guys, new to the forum!

I was cleaning out my garage and I stumbled upon a large brown box, curious to know the contents of this mysterious box, I opened it and found a desktop for a Universal Test Set. I assume this a quite a specialist piece of equipment and I'm struggling to find information on the internet about this system.

All I know is that it comes complete with operation/safety card, the two supplied adapters for the actual oxygen testing, the original tubing for the air to travel through. The metal is generally is excellent condition with some miniscule signs of pitting on 1 or 2 chrome rings. The dial plastic is in excellent condition with no cracks or scratches.

I have no idea what these things are worth, nor do I know how to test it! Not much info kicking around, found some guy on an American forum asking $7000, another website asking 2500 euros and an eBay auction asking 995 euros (I am from Scotland, UK BTW). Any info on price would be great or just a year of manufacture (serial number: 2414)

Thanks guys!

Here are some pictures
https://www.flickr.com/photos/55981615@ ... otostream/
https://www.flickr.com/photos/55981615@ ... otostream/
https://www.flickr.com/photos/55981615@ ... otostream/
https://www.flickr.com/photos/55981615@ ... otostream/
https://www.flickr.com/photos/55981615@ ... otostream/
https://www.flickr.com/photos/55981615@ ... otostream/