Lot of 19 Different Radio Crystals In 3 Sizes

Description

Here's a lot of radio crystals. all are untested. This lot contains the following.
3 large crystals, one is military with the following frequencies:
4.797,  7.277,  27.5
8 medium sized  crystals:
26.670, 30.000, 27.065, 27.155, 28.805, 28.715, 26.800, 28.765
8 small crystals:
27.065 is the only only legible case marking. The other 7 are ???
All frequencies are given in Megacycles (Mc)
Thanks for looking.