I was thinking of orb and sceptre I think, which quite often go together in England. The orb is the usual word for a globus cruciger in England (I think!). An oddly hugely symbolic Christian item for a glassworks to choose. I think you may be right. We need a specifically Moser collector on GMB to explain why this was chosen, the war seems to have perhaps led to it being used.... A lovely set with a wonderfully precise attribution, time-wise.
Robert