Original Floral Design on Paper

This is what I believe to be a very rare original template on paper that the porcelain painters did in watercolors before actually painting these on porcelain. It would date to the 18th century according to the style and the mark but I am not an expert on paper. This one here is a Nymphenburg example and is of three floral arrangements that are really nice. I bought these from a lady that collected these designs and had quite a few of them but other than that I have almost never seen these outside museums. The paper is 7 inches tall and 3.25 inches wide. It is in good condition with a bit of staining one would expect over 200 plus years with paper. It is marked as shown with their hexagram mark as well as the number 3 and 28 probably old collection IDs. Please email me for more information or other pictures.