TTL Oscillator source

[fluke]

I'm wanting to build a MidiBox FM and i can find most of the parts here in NZ for the OPL3 module (the other modules i can get as kits from Smash TV), but i can't find  a 14.318 MHz TTL Oscillator.  One of my sound cards has something that looks like it might be it:

It's got 4 legs,  one's connected to the ground plane on the back, the other 3 are through to the top (i assume).  How do i tell if it is a TTL Oscillator instead of just a 4 legged crystal?  How do i test it still goes once i desolder it?

[TK.]

Testing is only possible with a scope, but I would say: this is a TTL oscillator

Best Regards, Thorsten.

[fluke]

Thanks heaps Thorsten