Hi Peter, nice to see you are active here, I should’ve come sooner!
Cant wait to see your contributions to the forum.
About the book, unfortunately it’s far from being something you can really rely on, nothing better out there though.
About the 1937 pattern eagle, all the original pieces coming from Bulgaria and all the original eagles of the sort coming from groupings of German officers ARE GOLD PLATED. I, myself have 8 different variations, I don’t even think that there is as “crazy” person as I used to be about these. I’m missing 3 variations of all the originals that I have ever seen, but lately I just stopped hunting for them.
Thank you for the warm greetings!
Igor, the “white” eagle shown in the book is most likely a fake as well. Supposedly the whole series of these fakes started with an original, but the problem is that no one knows where it is and there is no telling apart, as all of these with the inscriptions were cast in silver.