I was hoping someone could help me with this book I have. It’’s a German stationary book. The Nazi elites would go through this book and pick out which stationary they wanted. Each example of stationary has perforations which spell "MUSTER". Muster means pattern or example in English which makes sense. However, on the 2nd page there is a Hitler bookplate that also has perforations which spell "MUSTER".

Can someone help me in anyway. Could this have been Hitler’s personal copy? Or did the publisher put "MUSTER" on everything they printed?

Thanks for any information