I have an old Realistic PRO-53 that still works . I am playing around with the thought of putting it back in service. I would like to find the following crystals - 46.06 - 46.16 - 46.18 - 46.52 - 453.550 - 462.975 - 460.575 , or if anyone wants to get rid of any old Regency/Realistic crystals please pm me. I know there are other places to pick up crystals out there but after looking I see that it would quickly run more than I really want to put into the scanner. When I was a youngster I always thought my grandfathers Bearcat crystal scanner was really neat to watch as the lights would light up as it went through the channels. I could offer the crytals I have as trade if anyone is interested - 37.28 - 42.10 - 42.26 - 153.860 - 153.890 - 162.475(NOAA Weather) and 168.425. Thanks!