Possible early Loetz with Eugen Marcus attributed silver overlay

DuDa said it well in his post of his Loetz 6893 with silver overlay: the best silver work he has seen. I have 7 pieces of glass, some known Loetz, that have the same high quality style of silver overlay. The thickness, high design, impeccable clean-up and detailed engraving are unmatched even by La Pierre in my opinion.

The first two pics are of vases I have in hand. The third and fourth are of a vase with a Eugen Marcus label.

I am canvassing around for more if anyone knows of a particular piece. I would love to find one with a label.