Clueless here too, not IoWSG I don't think and I don't think Alum Bay either, (hence my silence).
My guts spoke (uninvited) and said;
"Hmmmmm Adam Aaronson does gold and silver foil features beautifully and I'm sure he's worked hot glass over a foiled vessel...."
Adam normally always signs pieces, so I'd have thought it would have been signed.....