I found a lot of 7 crystals 6 of which are in the FT-243 holder. Frequencies are: 4000, 4030, 4280, 4500, 7833,8340. The seventh is10 MHz in what I believe is a CR-6 holder (same pin spacing as the FT-243 but thicker). I'll let these crystals go for $15.00 delivered. Any interest? Please reply by e-mail. 73, Michael