No. Sorry.
I have found an image of an Erwin Eisch signature from '89, a drinking glass from the "poetry in glass" series.
https://www.collectorsweekly.com/stories/47319-eisch-poetry-in-glass-part-2--drinkinI tend to look at the glass itself for identity, rather than relying on marks. I'm no good at deciphering handwriting, it looks odd anyway given it has to be executed on a cold glass surface, and they can be added later on by unscrupulous people.
This is a studio piece. It is made by somebody who used a four pronged pontil rod, which is fairly unusual and might help eliminate certain makers.
I have managed to find photos of two Eisch bits I have. The second is from the "poetry in glass" series and it has an applied clear glass, little round handle.