Nils Grönstrand did use the E crown pipe stamp. I haven't seen one where the stamp or razor looked like that, but that doesn't mean anything. The top razor is one and I have a similar one shape and all but my stamp is unreadable other than the pipe.
Attachment 314951
Two razors stamped with a pipe, made by Nils Grönstrand who was a knifesmith, grinder and champion in Eskilstuna Fristad. In 1801 he was elected councilor in Eskilstuna. Note the Fristad stamp, crown E, on the upper knife. Eskilstuna Stadsmuseum. Photo: Torbjörn Eriksson.
Here is mine.
Attachment 314952