There are two main versions of the Leverless Swan 1060 and varying nib sizes from No 2 to No 4. All a little confusing, perhaps, but all accurate. There is the classic of the late 40s and the more tapered, later version of around 1950. The sizes appear a little distorted by my dumb photography. In reality the earlier one is 13.2 cm and the tapered version is 13.7 cm capped. If I had my druthers I would pick the earlier one but I’m perfectly satisfied with the tapered version that I actually have.
When Mabie Todd moved on from hard rubber to celluloid they bought it in from the English Xylonite company so that’s what they advertised it as: Xylonite, but it’s just celluloid. I’m always a little cautious writing about Swan materials because they sometimes used a plastic that didn’t celluloid weld. Whatever it was, it wasn’t celluloid! Regardless of what they may be made of – and I assume it’s celluloid – these pens take a terrific shine and the more you handle them the better they shine.
Both have No 4 nibs. The post-war one has a semi-flex fine, the earlier one an Eternal No 4. Eternals come in for a bit of stick from the flex people, who think flexibility is the only way to go! The Eternal is the equivalent of the Conway Stewart Duro or any Duofold nib you care to mention, a very good nib indeed.