This is a lovely Vintage Unbranded Flat Top fountain pen working with a sac and equipped with a 14k warranted nib. What I really like about this pen is the unique end of the barrel in that, unlike the cap, it has no black piece. Makes for a very nice contrast. Pen is long and slender. Only marking is on the lever where there is a "P". Nib is smooth and fun to use. An awesome vintage pen!