Mystery mark on hammered copper skillet set

Does anyone recognise this mark? I found a set of vintage copper skillets,,6 in all,,range from 5" to 14.5" Hammered copper,with brass handles.. It looks to me like an A in a circle..Some also show a dot to the left and another dot inbetween legs of A..Im stumped..Hard enough to find skillets,,all i see is sauce pan sets...Any help is appreciated