in the first pic or two think I'm seeing a gold coloured knop - was that inclusions or painted, and if painted then I'd suggest modern. But none of this really matters - you're obviously passionately and lustfully in love with them, so you won't sleep at night unless you own them
I'd go for second half C20 - perhaps it's fairies and Bacchus in the vinyard.
Try frightening the other bidders - shove your paddle up high for all to see and simply hold it there - hoping the others wilt quickly.
Of course it might not work, and you could end up spending the gas, electricity, and food bill all on one day