When I started to take apart this Eagle coin-filler, I knew it was in good condition. It was still a surprise to find that its original sac was intact, and of unusual construction.
Instead of being made with a molded end, this sac is actually a section of rubber tubing with a stiff rubber plug glued into the end. Not a very desirable design if the pressure bar presses evenly on the whole sac, but perfectly serviceable given the one-piece bar used here, which cannot compress the sac at its bottom end.
Only just spotted this -- sale took place on September 18, with the pen selling below low estimate at kr 60,000 (€ 8,050) to the Københavns Museum. Catalog entry with full details and more photos here.