found a lot of rcv/xmt crystals

[punkuup5150]

i was cleaning out my back room at work and found a box of old crystals im guessing reciver or trasmitter crystals but have no idea what they are for not normal ranges im used to could someone be so kind as to let me knwo what they are for?

154.070 ~p77-ah
154.130 ~p77-ah
155.325 ~p77-ah
450.020~ p77-al
153.950~ p77-ah
42.560 ~p77-al
42.300 ~p77al
154.280 ~p77-ah
153.815 ~p77-ah


and theres about 10-15 other ones with the same type of numbers. im used to different ranges do any of these ring a bell and are they still used today? ive prolly got 80 different cystals in this box that i have no idea what they are used for.