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I've got some old WWII crystals that might be half that frequency. You might adjust them and double the frequency. Not sure what the application is but I could mail them to you. IM me if this might be a way.
Presumably they are for a specific purpose?, you may be able to source them along with the other components (such as the IC it's used with - assuming it is?). Failing that, and if you can't find it listed, there are a number of companies who will make specific crystals for you - in common use amongst radio hams.
We bought a car. The keyfob remotes didn't work. I had a look for them with the spectrum analyser, and found one of them about 371 MHz, the other about 384. Injecting 13.56MHz at the hot end of the crystal and pressing the button opens the car.
Sorry. the older crystals won't fit in the keyfob!
can you try 27.12Mhz and use a divider to derive what you want--probably you might get 27.xx crytals more easily.worst to worst, a 27.000 crystal cab be tuned at 27.12 by using a capacitor series to the crystal. then divide by '2'