The dial is the surprise here: a clean oval cut into the face of a square watch, filled with glossy black, with the gold-filled case framing it like a picture. Longines built this 3007-528 around that tension between the round dial and the rectilinear case, and in our opinion it is the whole appeal of this Longines Tank, a piece of late-1960s design nerve that reads as modern even now.
Longines has earned the right to that kind of confidence. The winged hourglass at the center of this dial was registered as a trademark in 1889, and it remains the oldest registered trademark still in continuous use by any watchmaker, a detail most owners of the brand never learn. By the time this case left Switzerland, Longines watches bound for the United States passed through the Longines-Wittnauer Watch Company, which is exactly why the inner caseback here is stamped LONGINES-WITTNAUER rather than the Longines name alone.
Inside runs the Longines caliber 528, a manual-wind movement from the brand’s own workshops, its bridge struck cleanly with the LONGINES signature. It is the kind of in-house manual caliber that defined dress Longines of the period: flat and unhurried, built to be serviced and run for decades rather than admired through a display back. Ours shows a bright balance and clean bridges in the photographs, the honest face of a movement that has been looked after.
The case measures 24mm across and 36.5mm from lug to lug, with 18mm between the lugs, compact proportions that sit flat and dressy under a cuff. It is 10k yellow gold filled, and the construction is stated plainly where it should be. The outer caseback is stamped ★ 10K GOLDFILLED, while the inner caseback reads LONGINES-WITTNAUER over 10K GOLD FILLED, the reference 3007-528, and the case number 7675100. The face of the case carries a fine florentine-style engine texture that catches light against the polished oval surround, and there are hairlines and handling marks across the back consistent with a watch that was worn and enjoyed. We have left all of it as found.
The dial is the reason to stop. It is glossy black, factory-original and unrestored, with the LONGINES signature and the winged hourglass printed in gilt above center and SWISS at the foot. Applied gold baton markers ring the oval, and two gilt hands sweep across it, with no date and no running seconds to break the layout. A faint, even speckling has settled into the gloss over the decades, the quiet way a vintage gilt dial shows its years, and to us it only makes the piece feel more honestly its age.
It comes on a mud-grey grained leather strap with cream contrast stitching, fitted to an OTTUHR signed buckle. The muted grey is a deliberate foil to the warm gold case and the black dial, dressy without going formal, the kind of pairing that lets the watch read as old without reading as fussy.
Serviced in-house at OTTUHR and backed by our 2-year mechanical warranty, this Longines Tank is compact, characterful, and mechanically sound. For the collector who would rather wear a shape that took a little nerve to draw than another safe round dial, the 3007-528 has a quiet argument to make. A square case, an oval dial, and not a wasted line between them.
