Astronomical symbol for 2 Pallas, variant from Rudolf Koch (The Book of Signs, New York: Dover Publications, 1955 and London: First Edition Club, 1930). Note that this sign is essentially identical to the alchemical sign for sulphur 🜍.
Own work based on: 2 Pallas (1).png by Urhixidur
Original: Urhixidur Vector:  Chabacano