Picked up this pretty little gal this week. I think it is Olivia and would be the first in the DB. Not sure on the date because the serial number starts with a 4 but the ad is from 1927 and the movement is 1928. Might have a dial/movement replacement? I think it might be worth trying to find a new correct movement/dial replacement, the dial is pretty dirty.
It is solid 14k with black enamel.