"The shape. Opening is smaller than the body so it can't be pressed."
With all due respect I can name more than a few companies who pressed glass in moulds with the opening smaller that the body, vases. decanters, covered dinnerware items such as sugars, pitchers just to name a few. Cambridge, Duncan Miller, New Martinsville, Paden City, Fostoria, Tiffin for example pressed glass with the openings far smaller than the bodies. Now perhaps your definition of pressed is different than my definition of pressed, however as an example the Cambridge Glass Company archieves lists both blown & pressed lines from it's beginnings to its closure & many of the pressed lines had items that incorporated openings smaller than the body diameter of the item. Now these definitions of what consitutes pressed may well vary between countries of origin, e.g. what is considered pressed in the US may not be considered pressed in England, France, Germany, etc.
I have received 1902 & 1908 Valérysthal catalog pages, however if the jar is Valérysthal it might be older than even the 1902 catalog. It is interesting that although this particular scroll is not evident in these catalogs the 1902 catalog has some interesting patterns that are more along those lines than the 1908 catalog. I've been provided a name of a gentleman in Germany that I'm told will know one way or another on Valérysthal. Thanks, Ken