HI, Have found [10] what appears to be tty crystals. All are marked with [?MFG?] NEL on them, and then the freq [I.E. 23.296KHZ] and [?NSN/PART #?] 2354-05. One of them has 60WPM taped on the body. Can anyone ident, and/or need them? $10.00 shipped CONUS if so. Thanks, JOE