Parkers made in Canada could be exported throughout the British Empire and the Commonwealth tariff-free. We often seek out Canadian-made Vacs because of their nibs, which are often found in wider and more flexible grades than their US-made counterparts. Canadian Vacs differ in some other features, as well, which sometimes causes confusion among collectors in the USA. These features include: nib imprints incorporating the 14K mark and "VACUMATIC"; black sections where US-made pens would have laminated; patent numbers on the back of the clip ring; retention of three narrow cap bands after equivalent US models went to a single wide band. The later three-band configuration differed in being more narrowly spaced, as well.