I tried to search Crewsk but no luck. Do you have an antique dealer around and maybe they know. I have a similar one but no markings on the bottom of mine. Mine has a cork in the spout. I keep mine on top of the refrigerator with other decorative items. I picked mine up in MI when visiting my brothers about 3 years ago at a thrift store we just happened to stumble into.
Se non supporta il calore, vattene dalla cucina!