Any help on the silver marks on the silver rimed bowl please, Ihope this may be the right forum for this item, I live in the UK but collect ABP glass , although when items are unmarked its not always possible to be sure if the item was made in the USA or the possibility of it being European, I believe this may well be American and the the silver rim may also be the USA, so any help on the ID of the silver marks may help me conclude as to the origin of the bowl, the bowl measures 8.5" in diameter and weighs 2kgs

many thanks for any help
Roy