Not an expert in foreign insulators by any means, but had a little help from my friends in identifying this little guy. The embossing on the crown (a Polish CREB?!) appears to read IE.ITSN-2 and it's in excellent shape. I'm told it's a CD 441 and that they list for about $50-75 in GIFONA, so it shouldn't last long at $30 + shipping, since there is no damage I can see. Thanks for looking!