Original  WWII era FT-243 crystals for the BC-620 receiver and transmitter set.  Many marked for use in BC-620.

Various manufacturers

Tested and oscillating close to frequency as marked

Not all crystals are shown in the photos

Some channels are in the 40 meter amateur ham radio phone band - see chart below
Channel 45 = 7206.667 kHz
Channel 46 = 7240 kHz
Channel 47 = 7273.33 kHz

See my other FT-243 listings for additional  frequencies