>> I've built a kind of chess-clock using a 32768Hz-crystal
>> as Timer1-oscillator
>
>I just noticed that. If the 32k is the period timer, then the
>frequency for the rest of the chip doesn't really matter, in
>which case you could use RC for it, as it's only processing
>instructions. As long as it's fast enough to deal with the
>output of the timer. Sorry about that

I would agree with this. Set the PIC up to use its internal 4MHz oscillator, 
and rely on the 32.768kHz crystal that is driving the timer for your high 
accuracy requirement. So long as you don't get a 32kHz crystal when you 
expect to get a 32.768kHz one - like a clock I have seems to have in it, it 
runs horrendously slow, as in minutes in an hour.

As to the pictures. The small ones I would say are all marked in MHz, so 
using the picture layout I think you have the following.

14.3MHz   24.5MHz
14.318MHz 16MHz 12.000MHz

The 14.3MHz may actually be 14.318 like the one below it, as this is a 
standard frequency because it generates serial baud rates nicely, but don't 
rely on that unless you have some form of frequency counter.

The 24.5MHz may be an overtone crystal, potentially requiring special 
arrangements to oscillate properly at the correct frequency, so if you try 
it in something don't be surprised if it doesn't work properly.

In the large crystal picture, Jinx identified the oscillator. The crystal at 
the top is another 14.318MHz just like the bottom right, the middle two are 
7.200MHz and 2.4576MHz. 

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