Sources tell me that it's tougher to find emerald Russian glass than cobalt. I don't collect foreign pieces so this little bugger that was in a recent collection purchase is on the auction block. Unembossed CD 506 in a deep emerald green. Awesome GIANT bubble in skirt. Looks like hardly any threads at top of pinhole but I was told that these were probably epoxied to the pin. Flake to underside of WG lip as only damage. $65.00 + shipping. First email that says' "I'll take it.". No PayPal.