It would be safest to buy a crystal of the same brand as the transmitter or receiver it's going into. As Dave mentioned, there is the question of negative- or positive-shift for FM devices (regardless of frequency band), as well as many others such as: mode (third overtone, fifth overtone, or third overtone with doubler); intermediate frequency (usually 455kHz on single-conversion receivers, and for the second intermediate frequency on double-conversion receivers); load capacitance; etc. If you buy the crystal that the manufacturer recommends for your receiver, you don't have to know any of this.

It makes my head hurt to think that we had to think about all that stuff way back when.