The three-door pocket watch seems to have a front cover to protect the watch glass, which seems to be well protected, and it is not easy to scratch or crash. So why is it that the three-door, stuffy shell (hunting shell) pocket watch with a front cover is the most likely to rot the crystal?
Figure 1: Hunting case pocket watch
Many cousins think that pocket watches must have a cover in front, press the head, the front cover pops open, and you can see the time. Actually, no, most of the pocket watches are open, just like Figure 2, more than 90% of the pocket watch styles are like this, and the hunting shell pocket watch is relatively rare. But many people are confused by the fake pocket watches and props watches used in movies and TV series, and they think that the pocket watch must have a cover in front, press the handle, and the front cover is opened to see the time, which is a wrong understanding.
Figure 2: Open-faced pocket watch
There are not many movies that use real pocket watches as props in movies, and the pocket watch given to Qiu Shuzhen by Andy Lau in "The Legend of the New Brother of the Casino Tycoon" is a real watch, which is a piece of American Eljin; There is also the movie "Ip Man I" Ip Man has no money, so he took out a pocket watch in the drawer to be it, and that piece is also a real pocket watch. Jackie Chan saw that the one used by Huang Feihong and Mo Shaocong were all prop pocket watches, and they didn't need 50 yuan to buy on Taobao.
Figure 3: Open-faced pocket watch
In fact, most pocket watches are like American train watches 974 and 992, which are open-face pocket watches without a lid in front, does this mean that it is not safe? Actually, no, this kind of pocket watch glass is very thick, but it is not easy to crush, only broken or broken.
Fig. 4: Semi-hunting shell pocket watch
There is also a pocket watch with a hole in the middle of the front cover, and you can see the time without opening the front cover, which is called a semi-hunting shell pocket watch, also called a navel watch.
Figure 5: Longines' hunting case pocket watch
Therefore, a pocket watch with a cover in front is misunderstood by many people as having a cover, and the glass can be better protected, and the glass is less likely to rot. But the truth is that on the contrary, the most susceptible thing to rot is the glass, why do you say that? I've done a video to explain why the glass of this shell pocket watch is the most susceptible to rotting.
Most of the glasses used in the first hunting shell pocket watch are glass, especially the ancient pocket watch, 99.9% of which are glass glasses, and the curvature of his glass is very small, the thickness is very thin, the thickest will not exceed 0.6 MM thick, the thinnest 0.3MM, do you say this piece of glass will be stable?
Therefore, due to improper operation, I press the glass too hard, and it will crack immediately. And this piece of glass is not just to buy a piece and put it on, because it is very thin, and it will not close the front cover if it is thicker. If the amplitude is high, the front cover will not be covered, the arc is not enough, the glass will also be pressed to the minute hand, and even the glass will be cracked by the minute wheel. Therefore, the requirements for this piece of glass are very high, and it is very difficult to match.
Once, I helped a cousin get a piece of such glass, and it took 3 pieces of glass to be worthy of one, because it was also risky when he installed it, and the wear rate was very high.
Figure 6: The enclosed area is prone to dust
Second, when many friends see that there is ash in the hunting case, they usually remove the ring where the glass is installed, then clean it and wipe the glass, which is the main reason for the glass to rot. Because there are gaps in the position of the mechanism of the front cover of the hunting shell pocket watch and the hinge position of the front cover, it is easy to enter the ash and cotton wool.
Therefore, many people do not know how to operate when cleaning these dust and cotton wool, and basically the glass glass will have a 90% chance of rotting when it is installed back. So it's also a big problem for a hunting case pocket watch.
Figure 7: There is a dust cap inside the back cover
Now the late hunting shell pocket watch he uses a higher front cover, and the glass is acrylic, which is a plastic watch glass, although he is easy to spend, but there is the protection of the front cover, the chance of scratching is very small. Second, the curvature between his front cover and the watch glass is enough, and it is okay to wear a glass glass if it is rotten. Third, even if the acrylic crystal is accidentally popped out and reinstalled, it is not easy to crush. Therefore, the lenses of the current hunting case pocket watch are more durable.
Figure 8: A century-old movement protected by a double back
After such an introduction, will you still buy a hunting shell pocket watch as your first choice? Feel free to leave a message.
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