Yes, two chambers, the smaller one for priming powder and the larger for main charges.
Tim-the large chamber holds just shy of 1600 grains of FFg. I haven't filled the smaller chamber but it larger enough to hold quite a bit of 3F or 4F.
Clark-the cord is braided linen cord that I found on Etsy and came from Latvia. It was relatively flat and I bulked it up by threading two strands of heavy line through it. I used aniline dyes for the green color.
I have never attempted engraving and probably lack the artistic talent to do it well so the flask will stay as is.