The 2nd generation (1943-1945) of the Sheaffer Triumph pens brought a wide variety of new models compared to the 2 or 3 in the 1st generation (1942). One of the top-end models is the Valiant II. It came in a full size pen and this smaller Tuckaway - a pen meant for a gentleman's vest or trouser pocket or a lady's hand bag. Each Tuckaway model is a shorter, slimmer version of the full size model. Yet the caps post easily to make the pen comfortable to use even by a man with large hands.
The overall condition of the pen is brilliant. There are no scratches, marks, plating loss or damage. The celluloid is gorgeous. The transparency is very good. The imprint and the filler knob knurling are deep and crisp. The button clip is gold plated silver - a common thing for wartime Sheaffer pens.
All the above history and information is almost unimportant compared to the nib. I have seen only a handful of Triumph nibs like this and none of them was on a Tuckaway. What an amazing thing. It is a true, vintage broad with gorgeous, stub-like line variation. It was not likely intended to be a stub, but it is so wide that it has that character.
The vacuum-fil system has been restored with modern techniques and materials. It should last decades and is guaranteed against failure for at least 1 year provide unsafe inks are strictly avoided.
You can see photos of the restoration process here: https://photos.app.goo.gl/aegLdCz1omWt6izS7
Length Capped - 114 mm (4.5”) Uncapped - 97.5 mm (3.8”) Posted - 132 mm (5.2”). Diameter Cap - 12.2 mm (0.48”) Barrel - 11.4 mm (0.45”)