found something similar this week. An A+ bowl, sommerso, dark red, trilobe - absolutely Murano. Except the bottom was coursely grounded, unfinished and there was a large bubble insde the glass. So what happened, the glass blower made this piece discovered there was a serious quality flaw while making it, something that cannot be repaired. His options are, throw the thing back into the pot (not an option in sommerso) or quickly finish it off so as not to spend more time on it and limit the damage. The subsequent work of folding over the wings was done shoddily (to the purists I say sorry if this is not an adjective) - and the result is a second. Like this one, I suppose.