How valuable is an antique watch?

I think you mean the Will brothers' watches. Most of Will Freile's watches are simple and affordable pocket watches made of Rosskopf pin system. Rosskopf pin rod system was invented in the second half of19th century to make watches that everyone can buy. Rosskopf himself called it a "proletarian watch", and his goal was to make a watch that ordinary workers could buy with two weeks' salary.

It will be bad luck if you can let me pass. Needle bar is a substitute for Swiss anchor, which is much simpler than Swiss anchor. It is also less accurate, but it is easier to manufacture.

As you can see, the pin lever on the left has two protruding pins. The Swiss anchor has two stones installed at the end of its arm, which looks like an anchor, hence its name. Their working principles are similar, but the friction between the anchor stone and the metal escape wheel is much smaller, which makes the watch more accurate and does not need much maintenance and lubrication.

Rosskopf applied for a patent for his system, but it was immediately copied by-oh, everyone. Millions of watches with a certain style of Rosskopf watches have been made. As you may suspect, they are not very valuable today.

Actually, it is a women's watch, which is even worse, because there is no requirement for traditional women's watches in contemporary fashion watches. Therefore, I regret to tell you that if it is original (the one above is not, as can be seen from the crack on the dial) and in working condition, you will be lucky to get 100 USD. In many cases, the most valuable part of these watches is the case, which can be silver or gold (if you are very lucky), even though it is very rare, because the gold case is used for better watches.

On the bright side, these watches look lovely. If you are interested in watchmaking, they are perfect experiments because they are huge and easy to disassemble and assemble.

Besides, some have beautiful dials, which you can see here. To know whether your sport belongs to Rosskopf, open the back of it and face it with this picture:

All Rosskopf have such a setup: a bridge on one side and a balance and other bridges on the other. In addition, to adjust the hours and minutes of a typical Rosskopf watch, you must press the button on the right side of the picture.

If you want to know more about clocks and watches, you can read my book, The Watch Manual, which explains this fascinating field to beginners. You can also download 60 pages of excerpts for free!