This product is a lot of 190 vintage radio crystals, including a variety of crystals for Ham radio and CB channels. The assortment of frequencies is focused on the most commonly used channels. These crystals are essential components for tuning into specific frequencies on a radio transceiver, making them a valuable resource for hobbyists and enthusiasts interested in radio communication. As a collector’s item, this lot of vintage crystals offers a diversity of frequencies for various communication purposes. Used collection of crystals.