At Brooklands Museum here in the UK they have some of Barnes Wallace's (he of Dambusters bouncing bomb fame) effects, including a draughting set and this Swan ink bottle.
I can't quite see through the dark glass (possibly encrusted with ink) to see if that is a marble in the top chamber, but I suppose it is. Is the Akkerman bottle based on this Swan bottle? Or were these Double-Decker type bottles common in those days?
Basically, if anyone has any knowledge about this kind of bottle I'd be grateful for the education.
There are various other ink bottles, desk sets etc distributed around the museum, most noticeably large bottles of Swan red ink for the clerk of the course (for the racing circuit). Always interesting to see.