Moulded / pressed glass and part frosted bowl for ID - Walther? maybe

Purchased this bowl yesterday and I am not sure if it may be a Walther piece or another glass factory. I have been through all the bowls (attributed and unattributed) on http://www.pressglas-pavillon.de/ and no luck, unless I missed it (I did go through them twice!)

It is part frosted pressed / moulded glass and was absolutely filthy, but has cleaned up ok. 9" diameter, 4" tall approximately

Any help with the maker and rough age or a pointer in the right direction would be appreciated.