We have no equivalent of this in Australia. All elliptical bulb shapes here are reserved for discharge lamps.
What is the coating in this, is it some sort of rubber to contain the glass if it breaks, if so this is only done in the North American Realm, never seen it done on any European or Asian lamp!
Do you know why the upper part of the stem is so black? Has it had an arc-out in the stem from moisture or is it a lead-glass seal?
Does this lamp still work?