No, not mine. We (which means our archives) got it from the children of a former employee. Got a lot of other material too, pictures etc. We will give it all back after we made scans, also the pins will be given back. But before that, we will try to identify all of them. If I remember it correctly, a colleague of mine wrote an article about the guy, I can send you the file if you are interested. Must have been an interesting life touring Europe in the 1920's and repairing aircraft engines everywhere.