3 x Vintage FT-243 Radio Crystal Module Units Military USA 4495 Freq WW2

This auction is for three Vintage FT-243 Radio Crystal Module Units.  I believe these date from WW2 and are US Military.  

The crystals are very old and untested so are being sold as non -working collectables only please.. 

Please see photos for details.. Thankyou for looking at this auction..