Jim, I feel the same about your degen as ORPO. I was trying to say that but, in around about way. Sorry.
Tim, about 30 years ago is when I first remember seeing some of this pattern etched blades. They were covered in a blue wax stuff without fittings. One was for the SS Police Division. I remember seeing it because sometime later it was for sale as a complete sword.
ORPO, Looking at the monograms on page 240 and 241 I think there may be some slight difference. Could just be my eyes.