UBB.threads Forums Edged Weapons SA & NSKK Dagger Forum ASSO SA blade enquiry

Happy New Year to you all .
I have an SA Dagger by ASSO. In a couple of places on the blade is a small amount of brass coloured metal either showing through , or on top of the blade . Its apparent slightly under the black etch on the motto but also near the tip. It is hard to photograph , but any ideas would be apprecited.