Longines Conquest 40 mm: what to check on a used piece

Longines Conquest 40 mm is the reference in this note. Read the dial as a printed part, not as a logo. Indices should share one height and one alignment. A marker that leans, or a print edge that feathers, is damage or a later dial. The minute track should meet itself at 12 without a step. Hands should match each other in finish. A seconds hand in a different color from the other two can be a design, so check it against the reference you wrote down rather than against taste. Lume plots, when they exist, should sit inside their markers. A plot that has crumbled is age. A plot that is a different color from its neighbors may be a later repair. Turn the crown one full turn out and back. It should thread smoothly. Grit in the crown tube is a service issue you can feel. None of this is a grade and none of it is a promise about a movement workshop. It is a list you can repeat on the next watch of the same reference.

How it differs

Longines Conquest 40 mm should be checked as one case, one dial, and one bracelet or strap. Measure the width and the lug-to-lug distance. Read the engraving. Then see which part looks newer than the others. People change crystals, inserts, clasps, and straps. The case is the part that should still match the reference you wrote down.

What to check on a used piece

What to check on a used Longines Conquest 40 mm starts with the engraving. Measure the case. Listings often say 40 mm, and the ruler is the check. Then check end-link play, clasp fold, and whether the hands pass each other. There is no price in this note.

Common mods

Common changes are the strap or bracelet, the crystal, the clasp, and sometimes the hands. Write which of those looks newer than the case. Leave the reference name tied to the engraving.

What people change

On the Longines Conquest 40 mm, people change the bracelet, the case, or the movement.