28 mm automatic strap: what to check on a used piece

28 mm automatic strap is the subject of 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

The size written down for this record is 28 mm. Measure across the bezel and from lug to lug before you accept that number. The seconds hand should sweep. That is the check for an automatic watch. Wind the crown and listen for the rotor only if the case back lets you. The strap or bracelet is a fit part. Check the lug width, the spring bars, and whether the clasp fold is worn through. People change the crystal, the clasp, and the strap more often than they change the case. Write which part looks newer.

What to check on a used piece

Read whatever engraving is on the case. Measure the width. Watch the seconds hand for a minute. Look at the end links or the strap holes. There is no price in this note, and the note does not grade the watch.

Common mods

Common changes are a new strap, a shortened bracelet, a replaced crystal, and a polished lug. Describe those changes next to the size and the movement type. The case you measured is the watch you have, even when a listing used a different width.

What people change

On the 28 mm automatic strap, people change the bracelet, the case, or the movement.