It depends on the amount of paint left on the dial.

 

One man's patina is another man's ruined dial
I bought 2 watches in poor condition which I couldn't otherwise find, and have sold both of them (mainly because they were hard to photograph, they looked OK on the wrist):

Volna

Raketa Jet

The Volna was dirty, and the paper dial would have been hard to clean
The Raketa's finish was breaking down, and no doubt will continue to do so

You've posted a couple of blue dialled watches elsewhere: apparently vintage blue dials are particularly prone to breaking down over time
It depends how much you want a particular watch, and how much wear it is going to get: lots of sunlight will accelerate the process

Alos consider also how old the watch is: if it's 40 years old and looking slightly rough, extrapolate how much worse it will get in the next decade or two, and that may be pleasantly acceptable

Hope these ramblings have helped, and happy hunting!

 

LOL, thanks for the ramblings, it is funny indeed to see how peoples tastes vary with vintage watches in terms of condition.
I was watching the latest episode of Hodinkee talking watches and it featured a collector from Japan.
I have never seen so much damn patina in my life and what entertained me was his absolute passion for his collection.
In my opinion, to each his own. I totally respect it. Thanks for chiming in.

 

It depends on different factors. Sometimes the colour deteriorates due to the method of colouring the dial. Some of the blue dials are achieved through a chemical process and they deteriorate to a brown colour.

The crazing as shown on the example below is caused by a lacquer coat over the top of the colour coat below. The lacquer reacts with the colour coat and causes the crazing. I have had the watch below for about 10 years and it has not changed in that time. I think the crazing was caused shortly after manufacture and is now stable. It then depends on whether you like the look of the crazing effect.

The one time I would be wary of a cracking paint surface is if there are any signs of de-lamination (flaking). There is little that can be done to a flaking dial.

Sekondtime

 

It depends on different factors. Sometimes the colour deteriorates due to the method of colouring the dial. Some of the blue dials are achieved through a chemical process and they deteriorate to a brown colour.

The crazing as shown on the example below is caused by a lacquer coat over the top of the colour coat below. The lacquer reacts with the colour coat and causes the crazing. I have had the watch below for about 10 years and it has not changed in that time. I think the crazing was caused shortly after manufacture and is now stable. It then depends on whether you like the look of the crazing effect.

The one time I would be wary of a cracking paint surface is if there are any signs of de-lamination (flaking). There is little that can be done to a flaking dial.

View attachment 14735129

Sekondtime

Thanks Bro, I get what you mean. I am a fan of a little bit of crazing or spider web effect as it does add some character.I have attached a screen shot of the specific dial I am talking about. Your opinion will be highly appreciated.

Joey