Antique Diamond Engagement Rings That Don't Cost the Earth! by: Anonymous
Hi Dawn from description it sounds like two circles play a part in this hallmark, a circle within a circle, there are a number of hallmarks with circles and arrows inside of them, often the arrow provides clues, is the arrow feathered or no feathers? if you can see writing around the circumference of the circle it could be the sponsor
Bay State Jewelry & Silversmiths Co. (Attleboro, MA, USA) - ca 1915 - 1930s
Do the time-frames fit together? Really need to see an image of these marks - thanks Dawn for writing in. Your jewelry sounds beautiful by the way, you can't compare antique diamond engagement rings, that don't cost the earth ;-)