Cannot find manufacturer - Could use your expertise
I have a hobnail bubble base bud vase that has USA and a mark which I have not been able to yet identify.
It appears as though it is Db with an underline. I have also searched on Ob, O6, 06, D6, etc. and I have come up empty. Does anyone have an idea of who the manufacturer is?
I surely would appreciate learning from your expertise. -sue