What customers ask before buying: sizing, authenticity, prices. Short answers first, the detail below.

The diameter matters less than it seems. What decides whether a watch sits well is the bracelet — and you can check it before buying.

Real prices from our selection and, more to the point, what moves them: model, plating, bracelet, box and papers.

How to choose a watch for someone else: the right year, the size when you do not know it, and how far ahead to order.

The same model in a men's and a women's size. Why it works better than two watches picked separately, and which pairs we have now.

Four families that look alike in photographs and behave differently on the wrist. The real difference is not the shape: it is the bracelet.

Plating cannot be repaired: once it is worn through, it stays that way. What actually ruins it, and what does not matter at all.

The strap is the one part of a watch meant to wear out. What actually kills it, and why the original should be kept even once it is no longer worn.

Original bracelet, intact plating, box and papers, a dial never redone. Four things — and between examples of the same model they can be worth hundreds of euros.

A signature on the bezel, engraved Roman numerals, bracelets that can be shortened. What to look for, and how Saint Laurent differs from Gucci.

«Gold plate» is not «gold», a «rigid bangle» cannot be tightened, «crocodile-stamped» is not crocodile. The full vocabulary, stated plainly.

Why a Gucci watch says «Swiss Made», who actually produced them, and how to recognise the references you meet most often.

A fashion house with no manufacture, a Japanese producer and a monogram in place of the hours. What you actually find on the caseback.

Why Hermès watches are Swiss without being licensed, where the padlock, the letter H and the screwed bezel come from, and what cannot be dated.

Why Longines is a different case from Gucci, Hermès and Saint Laurent, how to have the archives tell you what year your watch was born, and what changed in 1983.

In listings the two names are used as synonyms, and they are not. Where they come from, how to tell them apart on a card, and why they are back in fashion.

It is not a question of prestige but of habits. What each one asks of you, and the risk of vintage quartz that is almost never mentioned.