The earliest examples of the Fountainbel Bulkfiller, which the Belgian workshop Conid in Antwerp began making in 2012, carry several unmistakable engravings. The cap ring reads FOUNTAINBEL BULK-FILLER CONID, the screw of the clip housing CONID Antwerp - Belgium, and both the filler knob and, a second time, the end of the clip are marked First Production Run 2012 together with the individual number out of a total of sixty.
The metal parts including the clip are titanium, as is the Bock nib fitted. Because titanium cannot be bent to a sharp edge, the clip was worked from a turned sleeve and its final shape cut out by spark erosion; the concave inner face of the clip takes material up to about 2.5 millimetres thick and springs reliably back into place. The transparent components are made not of acrylic but of polycarbonate, which is considerably more impact-resistant and survives even severe deformation, though polishing it clear takes appreciably more effort.
One notable point of construction is a second O-ring that seals the bush of the nib unit ahead of the section. It prevents ink from working in from the front during filling, between the bore of the section and the nib unit, and drying there.